CN115433594A - Pressure adjusting method and device - Google Patents
Pressure adjusting method and device Download PDFInfo
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- CN115433594A CN115433594A CN202211192088.2A CN202211192088A CN115433594A CN 115433594 A CN115433594 A CN 115433594A CN 202211192088 A CN202211192088 A CN 202211192088A CN 115433594 A CN115433594 A CN 115433594A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 262
- 230000001105 regulatory effect Effects 0.000 claims abstract description 131
- 238000003763 carbonization Methods 0.000 claims abstract description 43
- 239000012535 impurity Substances 0.000 claims abstract description 32
- 230000033228 biological regulation Effects 0.000 claims abstract description 10
- 239000000571 coke Substances 0.000 claims description 68
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 54
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 54
- 238000005192 partition Methods 0.000 claims description 42
- 238000004939 coking Methods 0.000 claims description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 7
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 230000001143 conditioned effect Effects 0.000 claims description 5
- 238000011084 recovery Methods 0.000 claims description 5
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 238000009792 diffusion process Methods 0.000 abstract description 10
- 239000003034 coal gas Substances 0.000 abstract description 3
- 239000011269 tar Substances 0.000 description 17
- 241000196324 Embryophyta Species 0.000 description 6
- 239000003245 coal Substances 0.000 description 6
- 238000000746 purification Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000002817 coal dust Substances 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000011273 tar residue Substances 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 241000220317 Rosa Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
- C10B41/08—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for the withdrawal of the distillation gases
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
- C10K1/046—Reducing the tar content
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
- C10K1/12—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors
- C10K1/121—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids alkaline-reacting including the revival of the used wash liquors containing NH3 only (possibly in combination with NH4 salts)
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/20—Control of fluid pressure characterised by the use of electric means
- G05D16/2006—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means
- G05D16/2013—Control of fluid pressure characterised by the use of electric means with direct action of electric energy on controlling means using throttling means as controlling means
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Control Of Non-Electrical Variables (AREA)
Abstract
The invention relates to a pressure regulating method and a device, wherein regulated gas is conveyed through a closed container through a gas inlet, the volume of a gas guide channel in the container is changed by utilizing the liquid level of liquid in the container, and then the regulated gas is transmitted to the regulated gas to change the pressure of the regulated gas, so that the pressure value of the regulated gas is returned to the threshold range. The gas part in the regulated gas flows out through the gas outlet, and impurities in the regulated gas are mixed into the liquid and flow out from the liquid outlet at the bottom of the container. In the scheme, gas and liquid are respectively conveyed through different paths, pressure regulation is not interfered with each other, the pressure regulation of the regulated gas can reflect the real situation, and the method can be applied to the field of coal gas pressure regulation of a carbonization chamber and stable low-volume tail gas diffusion treatment.
Description
Technical Field
The invention relates to a gas pressure adjusting method and a gas pressure adjusting device, which can be widely applied to the fields of pressure adjustment in the processes of conveying water-insoluble gas, conveying gas and mixture containing impurities and moisture and other gas flowing processes, such as pressure adjustment of a coking chamber of a coke oven, a raw coke oven gas recovery system-gas collecting pipe constant negative pressure stabilizing system, pressure adjustment of the coking chamber, stable emission of tail gas of a chemical plant and the like in the field of coal coking.
Background
In the process of conveying fluid such as gas, gas and impurity-containing mixture which are insoluble in water, pressure instability can be caused due to various reasons, and the working condition requires that the pressure is stable or at least kept to float within a certain range, but the fluid generates amplitude due to gas flow change, water flow surge and the like, impurities corrode equipment and structures, so that the adjustment is delayed, the pressure change amplitude is large and the like, and the conventional pressure adjusting device cannot adjust the pressure timely, accurately and constantly.
For example, in the coal coking process, a gas collecting pipe is generally used to collect raw coke oven gas generated by heating coal inside a coking chamber, and the generated amount of raw coke oven gas varies with the temperature change in the wall of the coke oven in the whole coking period, thereby affecting the pressure in the coking chamber. The pressure of the raw gas in the carbonization chamber must be controlled within a reasonable range, the raw gas discharge amount of the carbonization chamber is increased in time to a gas collecting pipe when the generation amount of the raw gas is maximum, the situation that the pressure of the raw gas in the carbonization chamber is too high, if the pressure of the raw gas in the carbonization chamber is too high, a coke oven smokes and catches fire, a large amount of harmful raw gas leaks out, the environment is polluted, energy waste is caused, and a large amount of raw gas leaks into a combustion chamber to damage a coke oven device is avoided; in the final stage of coking, the generation amount of raw gas in the coking chamber is small, and if the pressure is too low, air enters the coking chamber to cause coke combustion, ash content is increased, and the coke quality is reduced. Therefore, in the production process, a pressure adjusting device of the carbonization chamber is generally required to be arranged between the carbonization chamber and the gas collecting pipe, and the pressure at the bottom of the carbonization chamber is ensured to be not lower than 5 Pa by controlling the flow of the raw coke oven gas entering the gas collecting pipe.
The pressure regulating device generally used at present is a single-hole carbonization chamber regulating and cutting device, and the flow area of the raw coke oven gas is controlled by utilizing water sealing structures such as a water sealing turning plate, an arc turning plate and the like so as to change the flow of the raw coke oven gas. However, the raw gas contains not only gas but also impurities such as graphite, condensed tar, tar slag, cooling circulating ammonia water and the like, so that the existing pressure regulating device has the following problems in use:
1. in order to control the pressure at the bottom of the carbonization chamber to meet the requirements, currently, the gas pressure in the gas collecting pipe can only be monitored and controlled, so that the pressure in the gas collecting pipe is kept at a positive pressure of 80-120 Pa, and the bottom pressure of the carbonization chamber is controlled. The coke oven gas collecting pipe is communicated with the bridge pipe and the valve body of each coke oven carbonization chamber, and the coke oven gas collecting pipe has larger pressure fluctuation due to larger change of the raw gas generation amount of the carbonization chambers due to different coal charging time of each carbonization chamber. Even if the pressure of the gas collecting pipe is stabilized in a positive pressure range of 80 Pa to 120 Pa, the pressure of the individual carbonization chambers is high, and crude gas escapes.
2. The gas collecting pipe constant pressure and negative pressure regulating system is utilized, the pressure regulating device is arranged between the gas collecting pipe and the carbonization chamber, and the regulating water seal is directly adopted, so that the regulating area is large, the integral diffusion surface of the liquid surface is large, and the instantaneous flow control is frequently fluctuated, so that the controller has hysteresis relative to the pressure change of the carbonization chamber, and the controller cannot be accurately regulated. The gas pressure in the carbonization chamber fluctuates.
3. Impurities such as graphite, tar slag and the like are easy to adhere to the inner wall and the water seal structure of the pressure adjusting device, the flow resistance of the raw coke oven gas in the pressure adjusting device is influenced, the pressure drop of the raw coke oven gas passing through the pressure adjusting device is further changed, and the pressure in the carbonization chamber is not convenient to accurately adjust.
Disclosure of Invention
The invention solves the technical problems that the prior pressure adjusting device is not suitable for timely, accurate and constant pressure adjustment due to corrosion, adjustment lag and large adjusting amplitude of the device in the prior art, and provides the method and the device for timely, accurate and constant pressure adjustment of water-insoluble gas, gas and fluid containing cooling water, condensate water and impurity mixture.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a pressure regulation method, comprising:
the method comprises the following steps of conveying gas to be regulated to pass through a closed container through a gas inlet, wherein the bottom of the container is provided with liquid in which the gas to be regulated is insoluble and a liquid outlet, the upper part of the liquid forms a first liquid-sealed space, the side part of the container is provided with a gas outlet, the inner cavity wall of the container is fixed with a regulating structure which forms one or more other liquid-sealed spaces through the liquid level, and a liquid level automatic regulating valve is arranged outside the container in a liquid collecting pipeline at the liquid outlet;
a first liquid seal space is used as a gas guide channel communicated between a gas outlet and a gas inlet of the container, and the highest height of the liquid level of the liquid is lower than the lowest height of the gas outlet;
when the pressure of the gas to be regulated exceeds a set threshold value, the opening degree of the liquid level automatic regulating valve is automatically regulated, so that the liquid level is changed to form one or more other liquid seal spaces for preventing the gas to be regulated from flowing into, the volume of the first liquid seal space is changed, the gas flow of the gas guide channel is changed and is transmitted to the gas to be regulated to change the pressure of the gas to be regulated, and the pressure value of the gas to be regulated is returned to be within the threshold value range.
Preferably, the threshold values include a highest pressure threshold value and a lowest pressure threshold value.
Preferably, the gas inlet is arranged at the top of the container, the adjusting structure is a plurality of parallel partition plates of which the fixed ends are fixed at the gas inlet at the top of the container, the free ends face the liquid level, gas channels capable of being blocked by liquid seals are formed among the partition plates, the gas channels are vertical channel parts of the gas diversion channels, and under the condition that the vertical channels are all unblocked, the opening heights from the free ends of the partition plates to the liquid level are gradually increased along the direction from the gas inlet to the gas outlet.
Preferably, the gas to be conditioned is a mixed gas mixed with impurities such as cooling water, condensed water, a cooling mixture, and the like.
Preferably, the regulated gas is coke oven crude gas, and the liquid comprises ammonia water and condensed tar.
Preferably, the conditioned gas is a chemical plant tail gas.
Preferably, the impurity is aqueous ammonia and condensed tar etc. install limit high, low liquid level detector in the container to control aqueous ammonia limit high and limit low liquid level, when the aqueous ammonia liquid level is located when limit high liquid level and limit low liquid level, every gas passage all seals.
A pressure regulator comprises a closed container, wherein the top of the container is a gas inlet of a regulated gas, the bottom of the container is provided with a liquid outlet for liquid seal, the side part of the container is provided with a gas outlet, an inner cavity wall is fixedly provided with an adjusting structure, a container cavity at the upper part of the liquid forms a first liquid seal space, the adjusting structure is a structure which forms one or more other liquid seal spaces through the liquid level of the liquid, and a liquid seal collecting pipeline at the liquid outlet of the container is provided with a liquid level automatic adjusting valve at a position outside the container; and the first liquid seal space is used as a gas guide channel communicated between the gas outlet and the gas inlet of the container, and the highest height of the liquid level of the liquid is lower than the lowest height of the gas outlet.
Preferably, the adjusting structure is a plurality of parallel partition plates with fixed ends fixed at a gas inlet at the top of the container and free ends facing the liquid level, a gas channel capable of being blocked by liquid seal is formed between the partition plates, the gas channel is a vertical channel part of the gas diversion channel, and under the condition that the vertical channel is smooth, the opening heights from the free ends of the partition plates to the liquid level are gradually increased along the direction from the gas inlet to the gas outlet.
A pressure regulator for a single-hole carbonization chamber of a coke oven comprises a closed container, wherein the top of an inner cavity of the closed container is provided with a gas inlet of raw coke oven gas sprayed and cooled by circulating ammonia water, the bottom of the inner cavity of the closed container is provided with a liquid containing liquid seal space for separating and cooling ammonia water and an ammonia water outlet, the side part of the inner cavity of the closed container is provided with a gas outlet, the wall of the inner cavity of the closed container is fixedly provided with a regulating structure, the liquid seal space of the ammonia water is a first liquid seal space, the regulating structure is a structure for forming one or more other liquid seal spaces through the liquid level of the ammonia water liquid, and the position of an ammonia water liquid seal collecting pipeline at the liquid outlet outside the container is provided with an automatic liquid level regulating valve; and the first liquid seal space is used as a gas guide channel communicated between the gas outlet and the gas inlet of the container, and the highest height of the liquid level of the liquid is lower than the lowest height of the gas outlet.
Preferably, the adjusting structure is a plurality of parallel clapboards of which the fixed end is fixed at the gas inlet at the top of the container and the free end faces the liquid level, a gas channel capable of being blocked by liquid seal is formed between the clapboards, and the gas channel is a vertical channel part of the gas guide channel; in the case that the vertical channel is unblocked, the opening height from the free ends of the plurality of partition plates to the liquid surface is gradually increased along the direction from the gas inlet to the gas outlet.
The coke oven crude gas recovery system is characterized in that the pressure regulator is connected between the bridge pipe and the gas collecting pipe.
The constant negative pressure stabilizing system for the gas collecting pipe comprises the gas collecting pipe and a plurality of carbonization chambers connected with the gas collecting pipe through the ascending pipe and the bridge pipe valve body, and is characterized in that a pressure regulator of the single-hole carbonization chamber is also arranged between the bridge pipe and the gas collecting pipe of each carbonization chamber of the coke oven.
The regulator is the pressure regulator, and the tail gas comprises synthetic tail gas produced by synthesizing methanol or part of residual discharged coal gas in coke oven gas fault treatment of a coke-oven plant.
The technical scheme of the invention has the beneficial technical effects that:
the invention discloses a method and a regulator, wherein a liquid collecting pipe at a liquid outlet is provided with a liquid level automatic regulating valve outside a container, the regulating valve is arranged outside a body, and for the regulator for a coke oven carbonization chamber, an ammonia water pipe can be directly discharged to a gas collecting pipe or provided with a collecting pipe to be sent to an ammonia water circulating tank. After the cooled raw gas passes through the vertical channel of the partition plate, the raw gas is separated from cooling circulating ammonia water and condensed tar at the bottom of the regulator, the raw gas passes through the gas outlet channel, namely is recycled to the gas collecting pipe through the gas outlet of the regulator body, and the condensed tar and the ammonia water enter the bottom of the gas collecting pipe through the ammonia water liquid level automatic valve. The gas and the liquid respectively pass through different paths, the pressure regulation is not interfered with each other, and the pressure regulation of the gas can reflect the real situation.
(can also connect the valve block in addition in liquid, liquid exit, the valve block connects the gas collecting pipe again, in order to facilitate the shutoff of the crude gas, facilitate washing regulator body, liquid level automatic regulating valve of ammonia and ammonia pipeline).
After raw gas and cooling circulating ammonia water are input into a regulator, graphite, tar residues, condensed tar and the like carried by the raw gas and the circulating ammonia water directly fall into the ammonia water at the lower part in a container; the raw gas directly flows out from the gas outlet of the container along the gas guide channel. The containers in the scheme are communicated with the gas collecting pipes, and the pressure of the raw gas at the raw bottom of each carbonization chamber of the coke oven is ensured to be not lower than 5 Pa by measuring the pressure of the raw gas in the carbonization chamber and adjusting the outflow of the raw gas at a gas outlet of the container by using the automatic liquid level adjusting valve. The raw gas enters the gas collecting pipe through a gas outlet of the container gas guide passage, and the raw gas, cooled ammonia water and condensed tar are guided into the lower part of the gas collecting pipe through an ammonia water liquid level automatic regulating valve. The gas and the liquid are respectively led into the gas collecting pipe through different paths, the pressure regulation is not interfered with each other, and the raw coke oven gas pressure in the carbonization chamber can be really and timely influenced by the regulation of the gas.
Meanwhile, raw gas enters the container from a gas inlet at the top end of the container as regulated gas, impurities in the raw gas directly fall into ammonia water stored in the container along the vertical direction and are difficult to accumulate in a vertical channel, so that the influence of the impurities on the flow of the gas is reduced, the pressure drop of the gas passing through the front and the back of the container is stable, the gas flow at a gas outlet of the container and the pressure at the bottom of the carbonization chamber are ensured to keep stable corresponding relation, and the pressure at the bottom of the carbonization chamber can be accurately changed when the gas flow is regulated.
And (II) the crude gas is conveyed downwards along the vertical direction towards the liquid level of the ammonia water, so that impurities in the crude gas can fall into the ammonia water in the container sufficiently, the impurities are not easy to accumulate at the air inlet at the top end of the container and the side surface of the partition plate, and the crude gas is convenient to maintain.
And thirdly, the bottom openings of the partition plates are gradually increased along the direction from the gas inlet to the gas outlet, and in the process of rising the liquid level of the liquid in the container, the bottom openings of the partition plates can be closed one by one, so that the number of vertical channels for the regulated gas to flow into is reduced, and different liquid seal spaces are formed. For different liquid seal spaces formed in the liquid level adjusting process, the size of the gas inlet of the container is changed equivalently due to the change of the number of the vertical channels, namely, the flow of the adjusted gas at the inlet of the container can be directly adjusted, and therefore the pressure at the bottom of the carbonization chamber of the coke oven is accurately controlled.
The lateral wall base of (IV) baffle is not at same horizontal plane, when the liquid level of aqueous ammonia in the container rose, can seal the bottom opening of vertical passageway gradually, reduced the bottom opening of vertical passageway with continuous adjustment's mode promptly, avoided the aqueous ammonia liquid level directly to cross the bottom opening of vertical passageway, lead to the atmospheric pressure of the gas inlet of container to change violently.
Drawings
FIG. 1 shows a cross-sectional view of a pressure regulator in accordance with one embodiment of the present invention;
FIG. 2 illustrates a top view of a pressure regulator in accordance with an embodiment of the present invention;
FIG. 3 shows a schematic view of the connection of a pressure regulator to a carbonization chamber in accordance with an embodiment of the invention;
FIG. 4 shows a cross-sectional view of a pressure regulator in accordance with a second embodiment of the present invention.
In the drawings, the reference numbers:
1-a container; 11-gas inlet; 12-a gas outlet; 13-a liquid outlet; 14-liquid-sealed collecting pipes; 15-liquid level automatic regulating valve; 2-gas diversion channel; 21-a separator; 22-a gas channel; 23-limit high level detector; 24-limit low level detector; 3-a carbonization chamber; 4-a riser; 5-bridge pipe; 6-a gas collecting pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, a pressure adjusting method and apparatus according to the present invention will be described in detail with reference to the accompanying drawings and embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are all used in a non-precise scale for the purpose of facilitating and distinctly aiding in the description of the embodiments of the present invention. To make the objects, features and advantages of the present invention more comprehensible, reference is made to the accompanying drawings. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the implementation conditions of the present invention, so that the present invention has no technical significance, and any structural modification, ratio relationship change or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention.
Example one
The technical scheme of the pressure regulating method and device of the invention will be described in detail with reference to the accompanying drawings 1 to 3 and specific embodiments.
As shown in fig. 1 to 3, a pressure adjustment method of the present embodiment includes:
the method comprises the following steps of conveying gas to be regulated, of which the pressure needs to be regulated, through a closed container 1 through a gas inlet 11, wherein the bottom of the container 1 is provided with liquid in which the gas to be regulated is insoluble and a liquid outlet 13, the upper part of the liquid forms a first liquid-tight space, the side part of the container is provided with a gas outlet 12, the inner cavity wall of the container is fixed with a regulating structure which forms one or more other liquid-tight spaces through the liquid level, and a liquid level automatic regulating valve 15 is installed at a position, outside the container 1, of a liquid collecting pipeline at the liquid outlet 13;
a first liquid seal space is used as a gas guide channel 2 communicated between a gas outlet 12 and a gas inlet 11 of the container 1, and the highest height of the liquid level of the liquid is lower than the lowest height of the gas outlet 12;
when the pressure of the gas to be regulated exceeds a set threshold value, the opening degree of the liquid level automatic regulating valve 15 is automatically regulated, so that the liquid level is changed to form one or more other liquid sealing spaces for preventing the gas to be regulated from flowing into, the volume of the first liquid sealing space is changed, the gas flow of the gas guide channel 2 is changed and is transmitted to the gas to be regulated to change the pressure of the gas to be regulated, and the pressure value of the gas to be regulated is returned to be within the threshold value range.
In this embodiment, the conditioned gas is a mixed gas containing cooling water, condensed water, and a cooling mixture. When the method is used for regulation, the regulated gas with the pressure required to be regulated is conveyed to pass through the closed container 1, and the pressure of the regulated gas before being input into the container 1 is monitored. Impurities such as cooling water, condensed water, and a cooling mixture in the conditioned gas directly fall into the liquid stored in the container 1, and the liquid level of the liquid in the container 1 rises. When the pressure of the gas to be regulated changes and deviates from the preset threshold range, the opening of the liquid level automatic regulating valve 15 is changed, the liquid outflow speed in the container 1 is regulated, and the height of the liquid level in the container 1 is further regulated.
Preferably, the threshold includes a highest pressure threshold and a lowest pressure threshold, the threshold range is defined by the highest pressure threshold and the lowest pressure threshold, and when the pressure of the gas to be regulated before being input into the container 1 is higher than the threshold range, the opening degree of the liquid level automatic regulating valve 15 is increased, the outflow of the liquid in the container 1 is accelerated, the liquid level in the container 1 is further reduced, the volume of the first liquid seal space is enlarged, the outflow of the gas to be regulated is accelerated, and thus the pressure of the gas to be regulated falls back into the threshold range. When the pressure of the gas to be regulated before being input into the container 1 is lower than the threshold range, the opening degree of the liquid level automatic regulating valve 15 is reduced, the outflow speed of liquid in the container 1 is reduced, the liquid level in the container 1 is further improved, the volume of the first liquid seal space is reduced, particularly, one or more other liquid seal spaces are formed through a regulating structure, the outflow of the gas to be regulated is reduced and delayed, and therefore the pressure of the gas to be regulated is increased back to the threshold range.
Preferably, the gas inlet 11 of the vessel 1 is arranged at the top of the vessel 1, and the regulating structure comprises four (or more) partitions 21 arranged in a vertical direction, the partitions 21 being parallel to each other. The top end and two sides of each partition plate 21 are fixed with the container into a whole, and the bottom end (i.e. free end) of each partition plate 21 extends into the container 1 at the gas inlet 11 of the container 1 and points to the liquid level of the liquid in the container 1. One of the partition plates 21 is fixed at the gas inlet 11 of the container 1, and is close to the edge of the side wall of the gas outlet 12, and the other partition plates 21 are distributed on one side of the partition plate 21 away from the gas outlet 12, and the four (or more) partition plates 21 are matched with the side wall of the container 1, and are separated at the gas inlet 11 of the container 1 to form four (or more) vertical gas channels 22, and the four (or more) gas channels 22 are vertical channel parts of the gas guide channel 2.
When impurity part in the gas of being transferred is imported into container 1 through vertical passageway, gas channel 22 guide is transferred the gas and is flowed along vertical direction, makes impurity directly fall into the liquid in container 1 along vertical direction, and difficult gaseous entry 11 and the baffle 21 side accumulation at container 1 to reduce container 1's clearance demand, be convenient for maintain, reduce the impurity in the gas of being transferred simultaneously as far as possible. As impurities fall directly into the liquid in the container 1 and flow out of the liquid outlet 13 of the container 1; the gas part of the gas to be regulated flows out from the gas outlet 12 of the container 1, and the flow rate of the gas part of the gas to be regulated can be directly controlled by adjusting the volume of the first liquid-tight space, including one or more liquid-tight spaces formed by adjusting the liquid level to be higher than the free ends of one or more partition plates, so that the pressure of the gas to be regulated can be accurately regulated.
Preferably, the height of the bottom end of the free end of each partition 21 arranged in sequence from the liquid surface (in the case where the liquid surface does not rise to the free end) increases gradually in the direction closer to the gas outlet 12 of the container 1, so that the bottom end openings of the four gas passages 22 also increase gradually in the direction closer to the gas outlet 12 of the container 1. The free ends of the adjacent partition plates 21 are not on the same horizontal plane, when the liquid level of the liquid in the container 1 rises, the bottom end opening of the vertical channel between the adjacent partition plates 21 is gradually closed by the liquid in the container 1, namely, the size of the bottom end opening of the vertical channel can be adjusted in a continuous adjustment mode, the bottom end opening of the vertical channel is prevented from directly and instantly exposing from the liquid or being submerged by the liquid, and the situation can cause the air pressure at the gas inlet 11 of the container 1 to be changed violently.
It is understood that the internal pressure of the device for generating the regulated gas can be adjusted by the method, and when the pressure of the regulated gas is changed, the pressure of the regulated gas can be conducted to the inside of the device for generating the gas, so that the pressure of the inside of the device is changed. In addition, the method can also be suitable for regulating the pressure or the flow of the gas without impurities, and only the volume of the gas diversion channel 2 needs to be regulated, so that the flow of the gas is changed, and the pressure of the gas is influenced.
Preferably, the container 1 is further provided with a limit high liquid level detector and a limit low liquid level detector, when the regulator needs to be completely isolated, the two detectors are respectively used for monitoring the limit high liquid level and the limit low liquid level of the liquid in the container 1, and the installation positions of the limit high liquid level detector 23 and the limit low liquid level detector 24 are higher than the bottom end of any partition plate 21. Wherein, the vertical distance between the bottom of the clapboard 21 with the highest bottom end and the limit low liquid level detector 24 is 30-50mm; the vertical distance between the limit high level detector 23 and the limit low level detector 24 is 50mm. If the limit high liquid level detector 23 detects that the liquid level of the liquid in the container 1 exceeds the limit high liquid level, the liquid level automatic regulating valve 15 is opened to enable the liquid in the container 1 to flow out, so that the liquid level of the liquid in the container 1 falls back; if the limit low liquid level detector 24 detects that the liquid level of the liquid in the container 1 is lower than the limit low liquid level, the automatic liquid level regulating valve 15 is closed, the liquid in the container 1 is prevented from flowing out continuously, and the liquid level of the liquid in the container 1 is kept unchanged. By controlling the level of liquid in the vessel 1 to be above the bottom end of the partition, the respective gas passages 22 can be closed.
The pressure adjusting method disclosed by the scheme can be applied to the fields of pressure adjustment of a coking chamber of a coke oven, a coke oven crude gas recovery system-gas collecting pipe constant negative pressure stabilizing system, pressure adjustment of the coking chamber, stable emission of tail gas of a chemical plant and the like in the field of coal coking. For example, when the pressure in the coking chamber 3 of the coke oven is adjusted, the raw gas output by the coke oven is used as the adjusted gas, the liquid in the container 1 is ammonia water, the pressure of the raw gas in the coke oven is changed by changing the size of the first liquid seal space, and the pressure of the raw gas in the coke oven can be transmitted into the coking chamber 3, so that the pressure in the coking chamber 3 is changed.
The invention also provides a pressure regulator, which comprises a closed container 1, wherein the top of the container 1 is provided with a gas inlet 11 for inputting the regulated gas, and the side part of the container 1 is provided with a gas outlet 12 for flowing out the regulated gas. The container 1 is filled with liquid for liquid seal, the regulated gas is insoluble in the liquid, and the bottom of the container 1 is provided with a liquid outlet 13. In the embodiment, the liquid outlet 13 is opened along the horizontal direction and is communicated with the lowest position of the inner cavity of the container 1, the liquid outlet 13 is communicated with a liquid-sealed collecting pipe 14, and the liquid-sealed collecting pipe 14 is provided with an automatic liquid level regulating valve 15 at the position outside the container 1. The cavity of the container 1 positioned above the liquid forms a first liquid-tight space, and the first liquid-tight space is used as a gas guide channel 2 for communicating a gas inlet 11 and a gas outlet 12. An adjusting structure is further fixed in the container 1, and when the liquid level of the liquid changes, the liquid level of the liquid is matched with the adjusting structure to change the volume of the gas guide channel 2.
In this embodiment, the liquid level automatic regulating valve 15 can automatically regulate the opening of the valve according to the input signal, regulate and control the flowing speed of the liquid in the container 1, and the liquid level automatic regulating valve 15 can be a pneumatic valve or an electric valve. In addition, liquid level automatically regulated valve 15 is installed outside container 1, when blockking up or liquid level automatically regulated valve 15 trouble in container 1, can conveniently pull down liquid level automatically regulated valve 15, washes container 1 to the impurity that will make blockking up in the container 1 directly discharges from liquid seal collecting pipe 14, and liquid level automatically regulated valve 15 is also convenient for change the maintenance.
Preferably, the regulating structure comprises four (or more) partition plates 21 installed at the gas inlet 11 at the top of the container 1 in a vertical direction, the four (or more) partition plates 21 are parallel to each other, the top end (i.e., fixed end) of each partition plate 21 is fixed at the gas inlet 11 of the container 1, and the bottom end (i.e., free end) of each partition plate 21 is inserted into the container 1 and points to the liquid level of the liquid in the container 1. One of the partition plates 21 is fixed on the edge of the side wall of the gas inlet 11 of the container 1 close to the gas outlet 12, the other three partition plates 21 are distributed on one side of the partition plate 21 away from the gas outlet 12, the four (or more) partition plates 21 are matched with the side wall of the container 1, four vertical gas channels 22 are formed at the gas inlet 11 of the container 1 in a partition manner, and the four (or more) gas channels 22 are vertical channel parts of the gas diversion channel 2. The heights of the free ends of the four (or more) partition plates 21 are raised one by one in the direction toward the gas outlet 12, and the heights of the bottom end openings of the four (or more) gas passages 22 are also raised in turn.
When the regulated gas flows into the container 1 from the gas channel 22, the gas part in the regulated gas needs to bypass the partition plate 21 and flow out from the gas outlet 12 of the container 1; impurities contained in the gas to be regulated directly fall in the vertical direction and fall into the liquid at the bottom of the container 1, and when the gas to be regulated flows, the impurities are difficult to bypass the partition plate 21 and flow to the gas outlet 12 of the container 1, so that the impurities can be absorbed by the liquid in the container 1 as much as possible.
During the rising of the liquid level in the container 1, the volume of the gas guiding channel 2 decreases gradually. And when the liquid level rises, the gas channels 22 can be closed one by one, each closed gas channel 22 forms a new liquid seal space, and the rest gas channels 22 which are kept unblocked still belong to one part of the first liquid seal space, namely, when the volume of the gas diversion channel 2 is reduced, the number of vertical channels in the gas diversion channel 2 is reduced, namely, the size of the gas inlet 11 of the container 1 is changed at the same time, namely, the flow of the regulated gas at the inlet of the container 1 can be directly regulated, so that the pressure of the regulated gas is accurately controlled.
Referring to fig. 3, the invention also provides a raw coke oven gas recovery system, which comprises a rising pipe 4 connected with the coking chamber 3 for generating raw coke oven gas, and a gas collecting pipe 6 for collecting raw coke oven gas. The ascending pipe 4 is communicated with the gas collecting pipe 6 through a bridge pipe 5, and the pressure regulator is arranged between the bridge pipe 5 and the gas collecting pipe 6. The liquid contained in the container 1 is ammonia water, and the regulated gas is raw coke oven gas which is generated by the coke oven carbonization chamber 3 and cooled by the sprayed ammonia water. The gas to be regulated is sent into a gas inlet 11 of the container 1 downwards along the vertical direction, impurities such as cooling water, condensate water, cooling mixture and the like in the gas to be regulated directly fall into the ammonia water at the bottom of the container 1 and are mixed into the ammonia water, the gas part in the raw coke oven gas needs to turn around a partition plate 21 and flows out from a gas outlet 12 of the container 1, and the gas part in the raw coke oven gas can be separated from the impurities by utilizing the system, so that the gas part of the raw coke oven gas is directly collected.
The invention also provides a pressure regulator of the single-hole coking chamber of the coke oven, which has the same structure as the pressure regulator, but the liquid contained in the container 1 is ammonia water, the gas to be regulated is raw coke oven gas which is generated by the coking chamber 3 and is cooled by spraying the ammonia water in the bridge pipe 5, and tar in the raw coke oven gas forms condensed tar in the cooling process, so that the raw coke oven gas contains tar residues, coal dust, cooling circulating ammonia water and condensed tar. The pressure regulator of the coking chamber of the coke oven is arranged between the positions of the bridge pipe 5 and the gas collecting pipe 6, and when in use, the pressure regulator of the coking chamber of the coke oven is controlled to operate according to the pressure in the communicated coking chamber 3, so as to regulate the pressure of the raw coke gas output by the coking chamber 3 and further influence the pressure in the coking chamber 3. In the operation process of the pressure regulator of the single-hole coking chamber of the coke oven, cooling circulating ammonia water, condensed tar, tar slag, coal dust and other impurities are gradually mixed into the ammonia water in the container 1.
For the pressure regulator of the single-hole carbonization chamber of the coke oven, the liquid-sealed collecting pipeline 14 directly discharges the discharged ammonia water to the gas collecting pipe 6. After the cooled raw coke oven gas passes through the gas passage 22 that baffle 21 constitutes, raw coke oven gas and impurity (including cooling cycle aqueous ammonia, condensation tar, tar sediment and coal dust etc.) are separated in the regulator bottom, raw coke oven gas flows to discharge 6 through the gas outlet 12 of container 1 and retrieves, above-mentioned impurity gets into discharge 6 bottoms through aqueous ammonia liquid level automatic valve, remix with the raw coke oven gas that the gas outlet 12 of container 1 flows, accept subsequent purification treatment, can adapt to present raw coke oven gas purification treatment equipment, and need not add new purification treatment equipment or reform transform former purification treatment equipment, the implementation cost of this scheme has been reduced. It should be noted that, in actual use, the discharged ammonia water may be supplied to one header pipe, and the discharged ammonia water may be supplied to the ammonia water circulation tank through the header pipe.
Under the condition of empty furnace, for example, when coke pushing is needed, the pressure regulator of the single-hole carbonization chamber of the coke oven is needed to be used for separating the carbonization chamber 3 from the gas collecting pipe 6, at the moment, the liquid level of the ammonia water in the container 1 is needed to be controlled between the liquid level limit high liquid level detector 23 and the limit low liquid level detector 24, and the four gas channels 22 can be completely sealed by the liquid level of the ammonia water. And the limit high liquid level can reduce and avoid the cooling ammonia water in the container 1 and the condensed tar from flowing into the gas collecting pipe through the gas 12 outlet of the container 1.
Referring to fig. 3, the present invention further provides a gas collecting tube constant negative pressure stabilizing system, which comprises a gas collecting tube 6 and a plurality of carbonization chambers 3 (only one is shown in the figure) communicated with the gas collecting tube 6, wherein the carbonization chambers 3 are communicated with the gas collecting tube 6 through an ascending tube 4 and a bridge tube 5, and the pressure regulator for the coke oven single-hole carbonization chamber 3 is installed between the bridge tube 5 and the gas collecting tube 6. When the system works, the gas collecting pipe 6 is maintained in a negative pressure state. In the coking process, the coal filled in the coking chamber 3 generates raw coke oven gas, the pressure regulator of the single-hole coking chamber 3 of the coke oven can control the discharge amount of the raw coke oven gas, and further the pressure of the coal gas of the coking chamber 3 is controlled, so that the pressure at the bottom of the coking chamber 3 is controlled to be not lower than 5 Pa, the positive pressure in the coking chamber 3 is ensured in the coking process, and the air is prevented from being sucked into the coking chamber 3.
The invention also provides a stable emission regulator for the tail gas emission of the chemical plant, which has the same structure as the pressure regulator, and the pressure regulating method and the pressure regulator are applied to the field of stable emission of the tail gas emission of the chemical plant. When the pressure regulating method and the pressure regulator in the scheme are utilized to treat tail gas, liquid contained in the regulator is selected to be liquid insoluble in the tail gas, the tail gas is input through the gas inlet 11 of the container 1, and the gas outlet 12 of the container 1 is communicated with the diffusion ignition device. When the regulated gas is conveyed through the container 1, the flow of the tail gas flowing through the container 1 can be changed by regulating the volume of the gas guide channel 2, and the pressure stability of the tail gas is kept. The tail gas can be stably and continuously output in a decrement mode when the tail gas is discharged, the safety effect is good, tempering is not easy to occur, the tail gas can be fully combusted in the discharging process, and the environment is protected.
In the process of adjusting the liquid level, the liquid level in the container 1 is increased in at least the following two ways: 1. before the tail gas is input into the container 1, spraying and cooling the tail gas, inputting the sprayed liquid into the container 1 along with the tail gas, supplementing the sprayed liquid into the container 1, and improving the liquid level of the liquid in the container 1; 2. directly supply liquid into the container 1 to increase the liquid level of the liquid in the container 1.
The widely used tail gas emission method is to isolate the emission by using a tail gas diffusion ignition method, and a diffusion ignition device is arranged on a sealed water-sealed tank which is communicated with a water storage tank. The air inlet of the diffusion ignition device is immersed below the liquid level of the water seal tank, and the air outlet of the diffusion ignition device is positioned outside the water seal tank. The tail gas to be discharged is input to a liquid level in the water seal tank, and the continuously input tail gas is accumulated in the water seal tank, so that the air pressure in the water seal tank is raised, and the liquid in the water seal tank is pushed to flow into the water storage tank. The liquid level in the water seal tank is reduced until the air inlet in the diffusion ignition device is exposed above the liquid level, and the tail gas accumulated in the water seal tank flows into the air inlet of the diffusion ignition device and flows out from the air outlet of the diffusion ignition device after ignition treatment. And (3) along with the exhaust of the tail gas in the water seal tank, the liquid level in the water seal tank rises back, the liquid level does not pass through the air inlet of the emission ignition device again, the tail gas to be discharged is accumulated in the water seal tank again, and the circulation is performed. In the process of isolated exhaust, the tail gas is exhausted one by one, so that tempering is easy to occur, and the problem of insufficient combustion during tail gas exhaust can be caused.
Example two
Referring to fig. 4, the difference between the first embodiment and the second embodiment is that the liquid outlet 13 in the present embodiment is opened along the vertical direction, the top end of the liquid outlet 13 is communicated with the lowest position of the inner cavity of the container 1, and the bottom end of the liquid outlet 13 is communicated with a liquid-sealed collecting pipe 14. In this embodiment, the liquid outlet 13 is opened along the vertical direction, so that the liquid and impurities in the container 1 can flow out conveniently.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (14)
1. A pressure adjustment method characterized by comprising:
the method comprises the following steps of conveying gas to be regulated to pass through a closed container through a gas inlet, wherein the bottom of the container is provided with liquid in which the gas to be regulated is insoluble and a liquid outlet, the upper part of the liquid forms a first liquid-sealed space, the side part of the container is provided with a gas outlet, the inner cavity wall of the container is fixed with a regulating structure which forms one or more other liquid-sealed spaces through the liquid level, and a liquid level automatic regulating valve is arranged outside the container in a liquid collecting pipeline at the liquid outlet;
a first liquid seal space is used as a gas guide channel communicated between a gas outlet and a gas inlet of the container, and the highest height of the liquid level of the liquid is lower than the lowest height of the gas outlet;
when the pressure of the gas to be regulated exceeds a set threshold value, the opening degree of the liquid level automatic regulating valve is automatically regulated, so that the liquid level is changed to form one or more other liquid sealing spaces for preventing the gas to be regulated from flowing in, the volume of the first liquid sealing space is changed, the gas flow of the gas diversion channel is changed and is transmitted to the gas to be regulated to change the pressure of the gas to be regulated, and the pressure value of the gas to be regulated is returned to be within the threshold value range.
2. Method for pressure regulation according to claim 1, characterized in that the threshold value comprises a highest pressure threshold value and a lowest pressure threshold value.
3. The pressure regulating method as claimed in claim 1 or 2, wherein the gas inlet is arranged at the top of the container, the regulating structure is a plurality of parallel partition plates with fixed ends fixed at the gas inlet at the top of the container and free ends facing the liquid level, a gas passage capable of being blocked by liquid seal is formed between the partition plates, the gas passage is a vertical passage part of the gas guide passage, and under the condition that the vertical passage is unblocked, the opening height from the free ends of the partition plates to the liquid level is gradually increased along the direction from the gas inlet to the gas outlet.
4. The pressure regulating method according to claim 3, characterized in that the gas to be regulated is a mixed gas mixed with impurities, the impurities being cooling water, condensed water, a cooling mixture, or the like.
5. The pressure regulating method according to claim 4, wherein the gas to be regulated is coke oven crude gas, and the liquid comprises ammonia and condensed tar.
6. The method of claim 4, wherein the conditioned gas is a chemical plant tail gas.
7. The pressure adjusting method according to claim 4, wherein the impurities are ammonia water, condensed tar, and the like, and a limit high and low level detector is installed in the container to control the limit high and low levels of ammonia water, and each of the gas passages is closed when the level of ammonia water is between the limit high and low levels.
8. A pressure regulator is characterized by comprising a closed container, wherein the top of the container is a gas inlet of a regulated gas, the bottom of the container is provided with a liquid and liquid outlet for liquid seal, the side part of the container is provided with a gas outlet, an inner cavity wall is fixedly provided with an adjusting structure, a container cavity at the upper part of the liquid forms a first liquid seal space, the adjusting structure is a structure which forms one or more other liquid seal spaces through the liquid level of the liquid, and a liquid seal collecting pipeline at the liquid outlet of the container is provided with an automatic liquid level adjusting valve at a position outside the container; and the first liquid seal space is used as a gas guide channel communicated between the gas outlet and the gas inlet of the container, and the highest height of the liquid level of the liquid is lower than the lowest height of the gas outlet.
9. The pressure regulator according to claim 8, wherein the regulating structure is a plurality of parallel baffles of which the fixed end is fixed at the gas inlet on the top of the container and the free ends face the liquid level, the baffles form a gas passage capable of being blocked by a liquid seal, the gas passage is a vertical passage part of the gas diversion passage, and the opening height of the free ends of the baffles to the liquid level is gradually increased along the direction from the gas inlet to the gas outlet under the condition that the vertical passage is unblocked.
10. A pressure regulator for a single-hole carbonization chamber of a coke oven is characterized by comprising a closed container, wherein the top of an inner cavity of the closed container is provided with a gas inlet of raw coke oven gas which is sprayed and cooled by circulating ammonia water, the bottom of the inner cavity of the closed container is provided with a liquid containing liquid seal space for separating and cooling ammonia water and an ammonia water outlet, the side part of the inner cavity of the closed container is provided with a gas outlet, the wall of the inner cavity of the closed container is fixedly provided with a regulating structure, the liquid seal space of the ammonia water is a first liquid seal space, the regulating structure is a structure which forms one or more other liquid seal spaces through the liquid level of the ammonia water liquid, and an automatic liquid level regulating valve is arranged at the position outside the container of an ammonia water liquid seal collecting pipeline at the liquid outlet; and the first liquid seal space is used as a gas guide channel communicated between the gas outlet and the gas inlet of the container, and the highest height of the liquid level of the liquid is lower than the lowest height of the gas outlet.
11. The pressure regulator for the single-hole coking chamber of the coke oven as claimed in claim 10, characterized in that the regulating structure is a plurality of parallel baffles of which the fixed end is fixed at the gas inlet at the top of the container and the free end faces the liquid level, a gas channel which can be blocked by liquid seal is formed between the baffles, and the gas channel is a vertical channel part of the gas guide channel; in the case that the vertical passage is unblocked, the opening height from the free ends of the plurality of partition plates to the liquid surface is gradually increased along the direction from the gas inlet to the gas outlet.
12. Coke oven crude gas recovery system, characterized in that a pressure regulator according to claim 8 or 9 is connected between the bridge pipe and the gas collecting pipe.
13. A gas collecting pipe constant negative pressure stabilizing system comprises a gas collecting pipe and a plurality of carbonization chambers connected with the gas collecting pipe through ascending pipes and bridge pipe valve bodies, and is characterized in that a single-hole carbonization chamber pressure regulator as claimed in claim 10 or 11 is further arranged between the bridge pipe and the gas collecting pipe of each carbonization chamber of a coke oven.
14. The regulator for stably discharging the tail gas of the chemical plant is characterized in that the regulator is the pressure regulator in claim 8 or 9, and the tail gas comprises synthetic tail gas produced by synthetic methanol or part of gas discharged by coke oven gas fault treatment of the coke-oven plant.
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| GB565726A (en) * | 1943-03-02 | 1944-11-24 | Richard Pierpont Moore | An improved valve for regulating low-pressure liquid flow, particularly in the dosing of one liquid with another |
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| CN115433594B (en) | 2023-12-05 |
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