CN103381334B - Method and device for removing hydrogen sulfide through steel slag - Google Patents
Method and device for removing hydrogen sulfide through steel slag Download PDFInfo
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- CN103381334B CN103381334B CN201310300686.1A CN201310300686A CN103381334B CN 103381334 B CN103381334 B CN 103381334B CN 201310300686 A CN201310300686 A CN 201310300686A CN 103381334 B CN103381334 B CN 103381334B
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Abstract
The invention relates to a method for removing hydrogen sulfide through steel slag. The method includes that steel slag is dried and crushed and then is filled in a reaction bed, the reaction bed is heated to be at 30-50 DEG C and then is kept at constant temperature; mixed gases are filled from the bottom of the reaction bed at 80-100 SCCM constant speed, tail gases generated after reaction are discharged from the top of the reaction bed and filled into a flue gas analyzer; when the flue gas analyzer detects that the tail gases contain hydrogen sulfide, the tail gases discharged from a gas outlet of the flue gas analyzer are filled into alkaline liquor, and when the flue gas analyzer detects that concentration of hydrogen sulfide reaches 10-20mg/m<3>, filling of mixed gases is stopped. According to the method, waste steel slag serves as treating agents, the two reactants are wide in sources and large in harm, and reactions of the two reactants can remove stink and solve the problem of environment pollution caused by steel slag; the hydrogen sulfide removing efficiency is high, the industrial wastes, namely steel slag, can be recycled, and the bidirectional effect of using waste to treat waste is achieved; the treated steel slag can be used as building materials and ecological risks and secondary pollution are avoided.
Description
Technical field
The present invention relates to a kind of hydrogen sulfide removal method, specifically a kind of method utilizing slag to remove hydrogen sulfide, belongs to environmental protection technical field.
Background technology
Hydrogen sulfide is colourless gas, the hydrogen sulfide of low concentration has strong rotten egg foul odour, in natural gas purification, petroleum refining, Coal Chemical Industry, municipal wastewater process engineering and in specific resistance to filtration process, all can produce H 2 S-containing gas (H2S), its content is relatively high compared with other component, strong toxicity, olfact is low, and pollutant emission standard desired value is lower.Its foul gas produced causes very large secondary pollution, has a strong impact on ambient atmosphere environment.Foul gas not only gives people's strong impulse in sense of smell, makes people uncomfortable; And also have harm to a certain degree to the physical and mental health of people, reduce the quality of life of people.Its in atmosphere maximum acceptable concentration be 10mg/m3.They are not only directly detrimental to health, extremely unfavorable to the growth of animal, and under aerobic and damp and hot condition, severe corrosion equipment, pipeline and instrument etc., and the aging of nonmetallic materials can be accelerated; Therefore, the correlative study of removing hydrogen sulfide in waste gas receives much concern.
The Chinese patent CN 102921286A(patent No.: 201210452317.X) disclose the device that a kind of low-level oxidation method removes hydrogen sulfide in waste water, waste gas, and realize the recovery of elemental sulfur.This device, comprises oxidation unit, cycling element and parametric controller, and oxidation unit top is provided with the probe and gas discharge outlet that are connected with parametric controller, and bottom is provided with gas pipe, liquid outlet and sulphur simple substance recovery port; Cycling element is provided with waste gas or waterwater entrance, air intake, check valve and peristaltic pump.The present invention also provides and utilizes said apparatus low-level oxidation method to remove hydrogen sulfide and reclaim the method for sulphur simple substance.Device of the present invention does not need filler, chemical reagent and microorganism, and cost is low, efficient, safety, mild condition, can use under normal temperature and pressure; Air blast can according to desulfurized effect by the conputer controlled blow rate required, and can realize the Automated condtrol of system, be elemental sulfur by Oxidation of Hydrogen Sulfide, avoids the secondary pollution that may cause.But this patent exists following shortcoming: device control units is on the high side, comparatively complicated.
Slag is the solid waste produced in steelmaking process, is divided into vessel slag, open hearth slag, electroslag according to the type of furnace.Discharge rate is about 15 ~ 20% of crude steel output.The large steel slag of discharging in steelmaking process not only takies a large amount of land resource, and contaminated environment, in order to adapt to the fast development of steel and iron industry, the comprehensive utilization of slag have also been obtained corresponding development, at present, slag is mainly used in metallurgical industry, highway construction, building materials, makes agriculture fertilizer and the agriculture aspect of acid soil improving agent, its utilization rate is only 10%, well below developed country's level, in recent years, the environmental protection value of slag comes into one's own just day by day, through retrieval, slag is applied to hydrogen sulfide field and yet there are no correlative technology field report.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of minimizing technology of hydrogen sulfide of simple, efficient, low cost, and industrial waste slag can be made to get utilization, fully must make use of two kinds of pollutants, the treatment of wastes with processes of wastes against one another, makes refuse obtain utilization that is innoxious, resource.
raw material illustrates:
The raw material slag that the present invention adopts is from the slag produced in Jinan Iron & Steel General Works convertor steelmaking process, wherein a calcium oxide accounts for 37.94%, silica accounts for 15.16%, and aluminium oxide accounts for 7.46%, and ferric oxide accounts for 9.62%, ferrous oxide accounts for 15.87%, magnesia accounts for 4.9%, and manganese oxide accounts for 5.1%, and chrome green accounts for 0.75%, phosphorus pentoxide accounts for 0.72%, sulphur simple substance account for 0.11% with account for the ferrite solid solution of larger proportion.
technical scheme of the present invention is as follows:
Utilize slag to remove a method for hydrogen sulfide, comprise step as follows:
(1) get slag drying, pulverizing, cross 20 ~ 100 mesh sieves, make slag powder, be evenly laid in reaction bed by slag powder, the tiling thickness of described slag powder is 2 ~ 5 ㎝;
(2) heat reaction bed, make slag powder temperature reach 30 ~ 50 DEG C and keep constant temperature;
(3) mix with nitrogen by hydrogen sulfide gas or containing the gas of hydrogen sulfide, obtain mist, described hydrogen sulfide gas or contain the gas of hydrogen sulfide and the volume ratio of nitrogen is (4 ~ 6): (94 ~ 96); At the uniform velocity mist is passed into the speed of 80 ~ 100SCCM from the bottom of reaction bed, make mist bottom slag powder through and with slag powder contact, the top of reaction bed is connected with flue gas analyzer, and the tail gas produced after reaction is discharged from the top of reaction bed and passed into flue gas analyzer;
(4) when flue gas analyzer detect in tail gas have hydrogen sulfide time, the tail gas that flue gas analyzer gas outlet is discharged is passed in alkali lye, when flue gas analyzer detect the concentration of hydrogen sulfide reach 10 ~ 20mg/m3 time, stop passing into mist.
Preferably, described is more than 1% containing the percent by volume of hydrogen sulfide in the gas of hydrogen sulfide.
The method utilizing slag to remove hydrogen sulfide of the present invention, slag powder temperature reaches 30 ~ 50 DEG C and after keeping constant temperature, ceaselessly logical mist, reacted tail gas is ceaselessly discharged, process hydrogen sulfide very capable of slag during beginning, in 2 ~ 3 hours, not sulfide hydrogen in the tail gas of discharge, along with the carrying out of reaction, the disposal ability of slag weakens gradually, can detect in tail gas have hydrogen sulfide, along with the decline of the disposal ability of slag, in tail gas, concentration of hydrogen sulfide is also becoming large gradually, when the concentration of hydrogen sulfide gas reaches 10 ~ 20mg/m3, stop passing into mist.
The present invention is preferred, and after described slag drying, water content is within the scope of 0 ~ 24wt%.When in slag, moisture is too high, in course of reaction, slag powder easily hardens, mist and slag powder contact uneven, affect reaction efficiency, hydrogen sulfide removal effect is bad; When in slag, moisture is too low, reaction efficiency is low, and the reaction time is long.
The present invention is preferred, and described alkali lye is the Ca (OH) of 1mol/L
2alkali lye.When flue gas analyzer detect in tail gas have hydrogen sulfide time, immediately tail gas is passed in alkali lye, when flue gas analyzer detect the concentration of hydrogen sulfide reach 10 ~ 20mg/m3 time, stop logical mist, the hydrogen sulfide do not got rid of in tail gas and Ca (OH)
2reaction, is discharged into the tail gas not sulfide hydrogen in air, free from environmental pollution.
Preferably, described hydrogen sulfide gas or be (5 ~ 6) containing the gas of hydrogen sulfide and the volume ratio of nitrogen: (95 ~ 96).Nitrogen, as loading gas, is used for steady air flow, mist is contacted evenly with slag, reacts completely.Experiment proves, if the hydrogen sulfide gas that the gas in input reaction is single or the gas containing hydrogen sulfide, gas flow rate is uneven, unstable, impulse force is excessively strong sometimes for disorderly air-flow, easily blown afloat by slag powder, affect the effect contacted with slag, hydrogen sulfide gas is removed not obvious, hydrogen sulfide gas of the present invention or containing the gas of hydrogen sulfide and the volume ratio of nitrogen be inventor through unlimited experiment, long-felt obtains.
The present invention is preferred, and the speed that step (3) mist passes into reaction bed is 90 ~ 95SCCM.The speed that mist of the present invention passes into reaction bed is the most suitable, and mist contacts with slag fully, and hydrogen sulfide and slag-metal reaction abundance, hydrogen sulfide removal is thorough, and the tail gas produced after reaction does not contain hydrogen sulfide.If mist flow velocity is excessive, mist contacts insufficient with slag, and mist is not able to do in time just to discharge reaction bed with slag-metal reaction, and do not have the object removing hydrogen sulfide, if mist flow velocity is too small, then hydrogen sulfide removal efficiency is lower.
The proportioning of the removal efficiency of hydrogen sulfide of the present invention and slag water content, hydrogen sulfide gas or the gas containing hydrogen sulfide and nitrogen, that mist passes into the factors such as speed is closely related.Logical mist is carried out with flow velocity of the present invention, just hydrogen sulfide is there will be in tail gas after 1 ~ 2 hour, when flue gas analyzer detect in tail gas have hydrogen sulfide time, immediately tail gas is passed in alkali lye, when the concentration that flue gas analyzer detects hydrogen sulfide reaches 10 ~ 20mg/m3, stop logical mist, the hydrogen sulfide do not got rid of in tail gas and Ca (OH)
2reaction, be discharged into the tail gas not sulfide hydrogen in air, free from environmental pollution, both eliminated hydrogen sulfide, and took full advantage of waste residue again, the slag after process can as the raw material of construction material, cement, fertilizer.
The present invention is preferred, and the heating of step (2) described reaction bed is placed in by reaction bed on water-bath or heat collecting type constant-temperature heating magnetic stirring apparatus to heat.Described water-bath, heat collecting type constant-temperature heating magnetic stirring apparatus are prior art, can buy in market.
The present invention is preferred, and described reaction bed is sand core funnel, and the aperture of core filter plate is less than 150 μm.
The present invention also provides a kind of device removing hydrogen sulfide gas for slag, comprise nitrogen storage tank, pending gas storage tank, reaction bed, flue gas analyzer and mist temporary storage tank, hydrogen sulfide gas or the gas containing hydrogen sulfide is stored in described pending gas storage tank, described nitrogen storage tank, pending gas storage tank is all connected with mist temporary storage tank jointly by pipeline, mist temporary storage tank is connected with reaction bed by tube connector, described reaction bed is sand core funnel, the bottom of sand core funnel is provided with the heater for heating sand core funnel, the top of sand core funnel is provided with the rubber stopper sealing sand core funnel, communicating pipe is provided with between sand core funnel and flue gas analyzer, one end of communicating pipe to be arranged in rubber stopper and to be communicated with sand core funnel inside, the other end is connected with the air inlet of flue gas analyzer, the gas outlet of flue gas analyzer is connected with escape pipe, escape pipe with fill Ca (OH)
2the Drexel bottle of solution is connected.
Preferably, between described nitrogen storage tank and mist temporary storage tank pipeline pipeline on, between pending gas storage tank and mist temporary storage tank pipeline pipeline on be provided with mass flowmenter and control the control valve of gas flow rate, be provided with the control valve of control gas flow rate the communicating pipe between sand core funnel and flue gas analyzer.
The present invention is preferred, pipeline between described nitrogen storage tank and mist temporary storage tank, the pipeline between pending gas storage tank and mist temporary storage tank, tube connector between mist temporary storage tank and reaction bed and communicating pipe be polyfluortetraethylene pipe.
Described heater is water-bath or heat collecting type constant-temperature heating magnetic stirring apparatus.Water-bath, heat collecting type constant-temperature heating magnetic stirring apparatus are prior art, can buy in market.
Described mass flowmenter is all connected with Flow Measurement Display Meter.For showing the flow by gas.
principle of the present invention:
Containing certain basic anhydride in slag, can react with hydrogen sulfide gas under certain condition; Have part soluble ferric iron salt in slag, can be used as adsorbent in aqueous with H
2s gas reacts, and contain a small amount of crystal in slag in addition, hydrogen sulfide gas can be adsorbed on crystal by physical action, can reach the effect removing hydrogen sulfide equally; Having under water condition, partial oxide can generate hydroxide and hydrogen sulfide gas reacts.
advantage of the present invention is as follows:
1, hydrogen sulfide removal method of the present invention, uses discarded slag as inorganic agent, and slag source is wide, and annual production is high, seriously polluted, and hydrogen sulfide is foul gas, has a strong impact on the healthy of environment and people, utilizes slag to remove hydrogen sulfide and reaches and remove
Stench hydrogen sulfide, solves the problem of slag environmental pollution simultaneously; Removal efficiency is higher, and industrial waste slag can be made to be provided
Source, reaches the effect of waste recycling.Slag after process can be used as construction material, can not there is ecological risk, dirty without secondary
Dye.
2, hydrogen sulfide removal method of the present invention, nitrogen is as loading gas, and be used for steady air flow, hydrogen sulfide is contacted evenly with slag, reacts completely, hydrogen sulfide removal efficiency is high, and hydrogen sulfide removal rate can reach 91% ~ 98%.
3, to pass into the speed of reaction bed the most suitable for mist of the present invention, and mist contacts with slag fully, hydrogen sulfide and slag-metal reaction sufficient, hydrogen sulfide removal is thorough, and the tail gas produced after reaction is not containing hydrogen sulfide.
4, hydrogen sulfide removal method of the present invention, after slag drying, water content is within the scope of 0 ~ 24wt%.Slag pulverulent bulk in course of reaction, voidage is large, mist and slag powder contact full and uniform, reaction efficiency is high, and hydrogen sulfide removal is thorough.
5, method of the present invention, not only achieves the removal of hydrogen sulfide, and make use of discarded slag, eliminates pollution, protects environment, improves financial cost simultaneously, achieve many things at one stroke, improve the utilization rate of discarded object, have very high economic benefit.
6, apparatus structure of the present invention is simple, is easy to operation, equipment cost, and reaction is easy to control.
Accompanying drawing explanation
Fig. 1 is the present invention removes the device of hydrogen sulfide gas structural representation for slag, and it comprises:
1, nitrogen storage tank, 2, pending gas storage tank, 3, mass flowmenter between nitrogen storage tank and mist temporary storage tank on pipeline, 4, mass flowmenter between pending gas storage tank and mist temporary storage tank on pipeline, 5, Flow Measurement Display Meter, 6, mist temporary storage tank, 7, sand core funnel, 8, flue gas analyzer, 9, Drexel bottle, 10, tube connector, 11, communicating pipe, 12, escape pipe.
Fig. 2 is the structural representation of reaction bed (sand core funnel).
Detailed description of the invention
Below by specific embodiment, also the present invention will be further described by reference to the accompanying drawings, but be not limited thereto.
The flue gas analyzer adopted in embodiment purchased from Wuhan Tianhong Instrument Co., Ltd, No. 01000176, model Hubei Province system.
Heat collecting type constant-temperature heating magnetic stirring apparatus is purchased from Zheng Zhengzhou Ke Tai experimental facilities Co., Ltd; Model DF-101S.
Mass flowmenter Beijing Qixing Huachuang Electronics Co., Ltd, model D07-7.
Flow Measurement Display Meter purchased from Beijing Qixing Huachuang Electronics Co., Ltd, model D08-2F.
embodiment 1
A kind of device removing hydrogen sulfide for slag, structure is as shown in Fig. 1, comprise nitrogen storage tank, 1 pending gas storage tank 2, reaction bed, flue gas analyzer 8 and mist temporary storage tank 6, pending gas storage tank is built with hydrogen sulfide gas or the gas containing hydrogen sulfide, described nitrogen storage tank 1, pending gas storage tank 2 is all connected with mist temporary storage tank 6 jointly by pipeline, mist temporary storage tank 6 is connected with reaction bed by tube connector 10, described reaction bed is sand core funnel 7, tube connector 10 is connected to the bottom of sand core funnel 7, the bottom of sand core funnel 7 is provided with the water-bath for heating sand core funnel 7, the top of sand core funnel 7 is provided with the rubber stopper sealing sand core funnel, communicating pipe 11 is provided with between sand core funnel and flue gas analyzer, one end of communicating pipe 11 to be arranged in rubber stopper and to be communicated with sand core funnel 7 inside, the other end is connected with the air inlet of flue gas analyzer 8, the gas outlet of flue gas analyzer is connected with escape pipe 12, escape pipe 12 is connected with the Drexel bottle 9 filling Ca (OH) 2 solution.
Between nitrogen storage tank and mist temporary storage tank pipeline pipeline on be provided with mass flowmenter 3 and control the control valve (not marking in figure) of gas flow rate, between pending gas storage tank and mist temporary storage tank pipeline pipeline on be provided with mass flowmenter 4 and control the control valve of gas flow rate, mass flowmenter 3 is all connected with Flow Measurement Display Meter 5 with mass flowmenter 4, is provided with the control valve controlling gas flow rate the communicating pipe 11 between sand core funnel 7 and flue gas analyzer 8.Pipeline between described nitrogen storage tank and mist temporary storage tank, the pipeline between pending gas storage tank and mist temporary storage tank, tube connector 10 and communicating pipe 11 are polyfluortetraethylene pipe.
embodiment 2
Utilize the device described in embodiment 1 to carry out removing the method for hydrogen sulfide, comprise step as follows:
1, slag is dry, makes the water content control of slag at 0wt%, then pulverizes, and cross 20 mesh sieves, make slag powder, take slag powder 0.5g and be evenly placed on the core filter plate of sand core funnel, the tiling thickness of slag powder is 2 ㎝;
2, reaction bed be heated to 30 DEG C in water-bath and keep constant temperature;
3, open the control valve of control valve and the control gas flow rate between pending gas storage tank and mist temporary storage tank between nitrogen storage tank and mist temporary storage tank simultaneously, observe Flow Measurement Display Meter, regulate flow velocity size, hydrogen sulfide gas and nitrogen pass in mist temporary storage tank 6, and mix in mist temporary storage tank 6, obtain mist, the volume ratio of hydrogen sulfide gas and nitrogen is 4:96; At the uniform velocity mist is passed into the speed of 80SCCM from the bottom of sand core funnel, make mist bottom slag powder through and with slag powder contact, the top of sand core funnel is connected with flue gas analyzer, and the tail gas produced after reaction is discharged from the top of reaction bed and passed into flue gas analyzer;
4, when flue gas analyzer detect in tail gas have hydrogen sulfide time, the tail gas that flue gas analyzer gas outlet is discharged is passed into the Ca (OH) of 1mol/L
2in alkali lye, when the concentration that flue gas analyzer detects hydrogen sulfide reaches 10 ~ 20mg/m3, stop passing into mist.
Concentration of hydrogen sulfide/hydrogen sulfide initial concentration × 100% of hydrogen sulfide removal rate=react away
Hydrogen sulfide initial concentration: before reaction starts, mist is directly passed into inside flue gas analyzer by the road, and without reaction bed, the data that when flue gas analyzer is stablized, side obtains are hydrogen sulfide initial concentration.Namely also hydrogen sulfide gas or the gas containing hydrogen sulfide and nitrogen are (4 ~ 6) with volume ratio: (94 ~ 96) are mixed to get the concentration of mist hydrogen sulfide.
The concentration of hydrogen sulfide reacted away: hydrogen sulfide initial concentration deducts the concentration (10 ~ 20mg/m3) detecting hydrogen sulfide through reaction bed flue gas analyzer.
Through the method for the present embodiment, the clearance of hydrogen sulfide hydrogen sulfide can reach 93% ~ 94%;
embodiment 3
Utilize the device described in embodiment 1 to carry out removing the method for hydrogen sulfide, comprise step as follows:
1, slag is dry, makes the water content control of slag at 5wt%, then pulverizes, and cross 40 mesh sieves, make slag powder, take slag powder 1g and be evenly placed on the core filter plate of sand core funnel, the tiling thickness of slag powder is 3 ㎝;
2, reaction bed be heated to 40 DEG C in water-bath and keep constant temperature;
3, open the control valve of control valve and the control gas flow rate between pending gas storage tank and mist temporary storage tank between nitrogen storage tank and mist temporary storage tank simultaneously, observe Flow Measurement Display Meter, regulate flow velocity size, hydrogen sulfide gas and nitrogen pass in mist temporary storage tank 6, and mix in mist temporary storage tank 6, obtain mist, the volume ratio of hydrogen sulfide gas and nitrogen is 5:96; At the uniform velocity mist is passed into the speed of 85SCCM from the bottom of sand core funnel, make mist bottom slag powder through and with slag powder contact, the top of sand core funnel is connected with flue gas analyzer, and the tail gas produced after reaction is discharged from the top of reaction bed and passed into flue gas analyzer;
4, when flue gas analyzer detect in tail gas have hydrogen sulfide time, the tail gas that flue gas analyzer gas outlet is discharged is passed into the Ca (OH) of 1mol/L
2in alkali lye, when the concentration that flue gas analyzer detects hydrogen sulfide reaches 10 ~ 20mg/m3, stop passing into mist.
Through the method for the present embodiment, the clearance of hydrogen sulfide can reach 95% ~ 96%
embodiment 4
Utilize the device described in embodiment 1 to carry out removing the method for hydrogen sulfide, comprise step as follows:
1, slag is dry, makes the water content control of slag at 10wt%, then pulverizes, and cross 100 mesh sieves, make slag powder, take slag powder 0.5g and be evenly placed on the core filter plate of sand core funnel, the tiling thickness of slag powder is 2 ㎝;
2, reaction bed be heated to 30 DEG C in water-bath and keep constant temperature;
3, open the control valve of control valve and the control gas flow rate between pending gas storage tank and mist temporary storage tank between nitrogen storage tank and mist temporary storage tank simultaneously, observe Flow Measurement Display Meter, regulate flow velocity size, hydrogen sulfide gas and nitrogen pass in mist temporary storage tank 6, and mix in mist temporary storage tank 6, obtain mist, the volume ratio of hydrogen sulfide gas and nitrogen is 6:96; At the uniform velocity mist is passed into the speed of 90SCCM from the bottom of sand core funnel, make mist bottom slag powder through and with slag powder contact, the top of sand core funnel is connected with flue gas analyzer, and the tail gas produced after reaction is discharged from the top of reaction bed and passed into flue gas analyzer;
4, when flue gas analyzer detect in tail gas have hydrogen sulfide time, the tail gas that flue gas analyzer gas outlet is discharged is passed into the Ca (OH) of 1mol/L
2in alkali lye, when the concentration that flue gas analyzer detects hydrogen sulfide reaches 10 ~ 20mg/m3, stop passing into mist.
Through the method for the present embodiment, the clearance of hydrogen sulfide can reach 91% ~ 92%;
embodiment 5:
Utilize the device described in embodiment 1 to carry out removing the method for hydrogen sulfide, method is with embodiment 2, and difference is,
Slag is dry, and make the water content control of slag at 12wt%, the gas containing hydrogen sulfide and the volume ratio of nitrogen are 5:95; The speed that mist passes into reaction bed is 95SCCM.
Through the method for the present embodiment, the clearance of hydrogen sulfide can reach 95% ~ 96%;
embodiment 6:
Utilize the device described in embodiment 1 to carry out removing the method for hydrogen sulfide, method is with embodiment 2, and difference is,
Slag is dry, and make the water content control of slag at 24wt%, the gas containing hydrogen sulfide and the volume ratio of nitrogen are 6:95; The speed that mist passes into reaction bed is 95SCCM.
Through the method for the present embodiment, the clearance of hydrogen sulfide can reach 97% ~ 98%.
Claims (8)
1. utilize slag to remove a method for hydrogen sulfide, comprise step as follows:
(1) get slag drying, pulverizing, cross 20 ~ 100 mesh sieves, make slag powder, be evenly laid in reaction bed by slag powder, the tiling thickness of described slag powder is 2 ~ 5 ㎝;
(2) heat reaction bed, make slag powder temperature reach 30 ~ 50 DEG C and keep constant temperature;
(3) mix with nitrogen by hydrogen sulfide gas or containing the gas of hydrogen sulfide, obtain mist, described hydrogen sulfide gas or contain the gas of hydrogen sulfide and the volume ratio of nitrogen is (5 ~ 6): (95 ~ 96); At the uniform velocity mist is passed into the speed of 80 ~ 100SCCM from the bottom of reaction bed, make mist bottom slag powder through and with slag powder contact, the top of reaction bed is connected with flue gas analyzer, and the tail gas produced after reaction is discharged from the top of reaction bed and passed into flue gas analyzer; Described is more than 1% containing the percent by volume of hydrogen sulfide in the gas of hydrogen sulfide, and after described slag drying, water content is within the scope of 0 ~ 24wt%;
(4) when flue gas analyzer detect in tail gas have hydrogen sulfide time, the tail gas that flue gas analyzer gas outlet is discharged is passed in alkali lye, when flue gas analyzer detect the concentration of hydrogen sulfide reach 10 ~ 20mg/m3 time, stop passing into mist.
2. remove the method for hydrogen sulfide according to the slag that utilizes described in claim 1, it is characterized in that, described alkali lye is the Ca (OH) of 1mol/L
2alkali lye.
3. the method utilizing slag to remove hydrogen sulfide according to claim 1, it is characterized in that, the speed that step (3) mist passes into reaction bed is 90 ~ 95SCCM.
4. the method utilizing slag to remove hydrogen sulfide according to claim 1, it is characterized in that, the heating of step (2) described reaction bed is placed in by reaction bed on water-bath or heat collecting type constant-temperature heating magnetic stirring apparatus to heat, described reaction bed is sand core funnel, and the aperture of core filter plate is less than 150 μm.
5. described in a claim 1, remove the hydrogen sulfide removal device of hydrogen sulfide method, comprise nitrogen storage tank, pending gas storage tank, reaction bed, flue gas analyzer and mist temporary storage tank, hydrogen sulfide gas or the gas containing hydrogen sulfide is stored in described pending gas storage tank, described nitrogen storage tank, pending gas storage tank is all connected with mist temporary storage tank jointly by pipeline, mist temporary storage tank is connected with reaction bed by tube connector, described reaction bed is sand core funnel, the bottom of sand core funnel is provided with the heater for heating sand core funnel, the top of sand core funnel is provided with the rubber stopper sealing sand core funnel, communicating pipe is provided with between sand core funnel and flue gas analyzer, one end of communicating pipe to be arranged in rubber stopper and to be communicated with sand core funnel inside, the other end is connected with the air inlet of flue gas analyzer, the gas outlet of flue gas analyzer is connected with out
Tracheae, escape pipe with fill Ca (OH)
2the Drexel bottle of solution is connected.
6. according to the hydrogen sulfide removal device described in claim 5, it is characterized in that, between described nitrogen storage tank and mist temporary storage tank pipeline pipeline on, between pending gas storage tank and mist temporary storage tank pipeline pipeline on be provided with mass flowmenter and control the control valve of gas flow rate, be provided with the control valve of control gas flow rate the communicating pipe between sand core funnel and flue gas analyzer.
7. according to the hydrogen sulfide removal device described in claim 5, it is characterized in that, pipeline between described nitrogen storage tank and mist temporary storage tank, the pipeline between pending gas storage tank and mist temporary storage tank, tube connector between mist temporary storage tank and reaction bed and communicating pipe be polyfluortetraethylene pipe.
8. according to the hydrogen sulfide removal device described in claim 5, it is characterized in that, described mass flowmenter is all connected with Flow Measurement Display Meter.
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| CN111189968A (en) * | 2018-11-14 | 2020-05-22 | 中国石油化工股份有限公司 | Device for detecting absorption and elimination performance of hydrogen sulfide |
| CN110170249A (en) * | 2019-05-09 | 2019-08-27 | 昆明理工大学 | A kind of method of v-bearing steel slag calcining purification hydrogen sulfide flue gas |
| CN111569821A (en) * | 2020-05-20 | 2020-08-25 | 中国华能集团有限公司 | Composite adsorbent for methane desulfurization and decarburization and preparation method and application thereof |
| CN111575075A (en) * | 2020-05-20 | 2020-08-25 | 中国华能集团有限公司 | Method for desulfurizing and decarbonizing methane by combining solid waste and waste alkali liquor |
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