CN215336375U - Waste gas and waste liquid treatment device - Google Patents
Waste gas and waste liquid treatment device Download PDFInfo
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- CN215336375U CN215336375U CN202120593107.7U CN202120593107U CN215336375U CN 215336375 U CN215336375 U CN 215336375U CN 202120593107 U CN202120593107 U CN 202120593107U CN 215336375 U CN215336375 U CN 215336375U
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Abstract
The utility model discloses a waste gas and liquid treatment device, which relates to the field of production and manufacture of polyester resin and comprises a conveying part, a spraying and washing part, an incineration part, a heat exchange part and an emergency protection part, wherein the spraying and washing part and the incineration part are arranged to carry out spraying and washing and high-temperature incineration treatment on waste gas and liquid generated in the production process of the polyester resin, so that the waste gas and liquid are effectively treated, and the treatment mode is more stable and reliable; in the treatment process, secondary wastewater and other waste substances can not be generated, the combustion heat is recycled, and the steam is byproduct, so that the energy is saved and the environment is protected.
Description
Technical Field
The utility model relates to the field of production and manufacturing of polyester resin, in particular to a waste gas and liquid treatment device.
Background
Polyester resins are widely used in chemical fields such as fibers, sheets and films, and the production activities of polyester resins usually have five waste gas generation sources:
the method comprises the following steps that firstly, a storage tank in a raw material tank area is used for exhausting gas through a breather valve, the waste gas is discharged intermittently, the gas flow is small, and the main components are a large amount of nitrogen and a small amount of VOCs (volatile organic compounds) and have a certain peculiar smell; secondly, discharging gas from the reaction kettle in the esterification stage, wherein the waste gas is discharged intermittently and is small in gas quantity, and the main components are partial nitrogen and partial VOCs and have obvious peculiar smell; exhausting by a vacuum pump in the polycondensation stage, wherein the waste gas is intermittently discharged, the gas quantity is medium, the main components are a small amount of nitrogen and a large amount of VOCs, and strong peculiar smell is generated; fourthly, collecting waste gas by a granulator head, wherein the waste gas is discharged intermittently, the gas flow is overlarge, and the main components are air, a small amount of VOCs (volatile organic compounds) and trace dust particles which have certain peculiar smell; and fifthly, the collected gas after the water tank of the sewage treatment station matched with the production is covered and sealed, the waste gas is continuously discharged, the gas quantity is medium, the main components are air and a small amount of VOCs, and the peculiar smell is obvious.
The five waste gases have different emission frequencies, gas amounts and concentrations, and if the five waste gases are emitted and mixed at the same time, the total gas has the characteristics of low VOCs concentration and large gas amount for a long time and sudden increase of the VOCs concentration for a short time, and the waste gases are difficult to be properly treated at one time.
At present, TO direct combustion type incineration or RTO heat accumulating type incineration, CO catalytic oxidation or RCO heat accumulating type catalytic oxidation, water washing spraying, activated carbon adsorption, biological trickling filtration, photocatalytic oxidation, low-temperature plasma and the like are generally adopted for tail gas treatment in the production of polyester resin; TO or RTO carry out the combustion decomposition TO VOCs through burning fuel gas, but when the waste gas of VOCs low concentration, the big amount of wind, the fuel gas consumption is big, except that RTO's heat accumulator can be used as the inlet air preheating with partly flue gas heat, RTO flue gas residual heat and TO's whole flue gas heat are all discharged, do not make full use of the waste heat, and comprehensive running cost is higher. In addition, the concentration of VOCs in the mixed gas may reach 25% Lower Explosion Limit (LEL), although the LEL detector is usually arranged on the pipeline, and when the LEL exceeds 25%, the mixed gas is switched TO the activated carbon adsorption tank and then discharged, but the method is only an emergency, and if the concentration frequently exceeds 25% LEL without any solution, the mixed gas is frequently switched TO the activated carbon adsorption tank by the system, and the TO/RTO loses meaning.
The power consumption of CO or RCO is generally higher, the working condition that dust particles are contained and the concentration fluctuation of the VOCs in the waste gas is larger is not suitable, the dust particles are easy to adhere to a catalyst bed layer, and the catalyst efficiency is reduced. When the concentration of the VOCs in the waste gas is increased suddenly, the catalyst bed layer is easy to cause overtemperature due to violent reaction, the service life of the catalyst is influenced, and the safety of equipment is not facilitated. It is a common practice in the industry to add a water scrubbing spray tower to scrub dust before the flue gas enters the CO/RCO, but this again generates waste water, and the scrubbed flue gas has a high humidity and adversely affects the subsequent CO/RCO. In addition, CO/RCO also faces the problem of VOCs concentrations frequently exceeding 25% LEL.
The washing sprays that treatment efficiency is not high, especially handles that waste gas VOCs fluctuates greatly and contain and smell the lower foul smell of threshold value or have the operating mode of peculiar smell material the effect is worse, takes place ultimate emission value extremely easily and exceeds standard, can produce waste water moreover, causes secondary pollution. Even if other treatment modes are added at the rear part of the water washing spray, such as a method combining the water washing spray and CO, a small amount of water vapor is carried in the waste gas after the water washing, and the humidity is too high, so that the subsequent process is adversely affected.
The active carbon adsorption treatment effect is not good, and adsorption capacity is exhausted very fast, needs frequently to change the active carbon, and the change process is still difficult to avoid releasing VOCs, and the abandonment active carbon of changing out needs the registration record as the useless material of danger, deposits to the useless warehouse of danger to entrust the unit of resources and handle, and flow and procedure are loaded down with trivial details, on the foot increase the management degree of difficulty.
The biological trickling filtration treatment effect is unknown, but great energy is needed to be invested to maintain the biological activity, parameters such as temperature, pH and the like must be strictly controlled, other carbon sources need to be supplemented to microorganisms to prevent life exhaustion in the production process if the yield of waste gas is reduced, the microorganisms can die in a large amount due to carelessness or carelessness in management, and great time and energy are needed to cultivate the microorganisms again, so the production is seriously influenced, and the reliability is poor.
The effects of photocatalytic oxidation and low-temperature plasma methods are unknown, but at present, due to industrial confusion, large differences in product effects and the like, the methods are frequently written and clearly discouraged and are not recommended.
Two streams of wastewater are also generated in the polyester resin production campaign: esterification wastewater and polycondensation wastewater; the output of the esterification wastewater is about 10-20% of the finished product, and the COD concentration is higher; the polycondensation wastewater produced was low in yield, but the COD concentration was extremely high. The common practice in the industry is to use biological methods to consume COD by the metabolism of microorganisms to achieve the purpose of purifying water quality, and the method can treat polyester resin waste gas and polyester resin waste water simultaneously.
The discharge frequency, the gas quantity and the concentration of the waste gas and the waste water are different, and if five waste gases and waste water are discharged and mixed at the same time, the total waste gas and waste water has the characteristics of low concentration and large gas quantity of VOCs for a long time and sudden increase of the concentration of VOCs for a short time, the waste gas is difficult to properly treat once, and the treatment device which is economic and environment-friendly, low in energy consumption and convenient to manage is provided for the waste gas and waste water treatment device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a waste gas and liquid treatment device, which solves the problems of excessive loss and low efficiency in the treatment of waste gas and liquid in the production of polyester resin in the prior art. In order to achieve the purpose, the utility model adopts the following technical scheme: an apparatus for treating waste gas and liquid, comprising: a spray washing section having: the washing tower is used for spray washing; a feed line disposed at the top of the scrub column; a discharge line disposed at the bottom of the washing column; a conveying part disposed on the left side of the spray washing part, the conveying part having: the first waste gas pipeline is connected to the middle part of the washing tower, a first adjusting valve and a second waste gas pipeline are mounted on the first waste gas pipeline, the second waste gas pipeline is connected to the lower part of the washing tower, and a second adjusting valve is mounted on the second waste gas pipeline; an incineration portion connected with the washing tower, the incineration portion having: the conveying pipeline III is connected with the washing tower and is provided with a valve V; the waste gas and liquid incinerator is connected to the other end of the conveying pipeline III; a waste liquid pipeline connected to a furnace body of the waste gas and waste liquid incinerator; and the conveying pipeline six is connected to the furnace body of the waste gas and waste liquid incinerator.
Further, in the embodiment of the present invention, the spray washing section further includes: the circulating pump is connected to the other end of the discharge pipeline; one end of the first conveying pipeline is connected to the circulating pump, and the other end of the first conveying pipeline is connected to the top of the washing tower;
further, in an embodiment of the present invention, the apparatus for treating waste gas and wastewater further includes: a heat exchanging portion connected to the waste gas/liquid incinerator, the heat exchanging portion having: the heat exchange fin is connected with the waste gas and waste liquid incinerator; the boiler is arranged above the heat exchange fins; a water inlet line connected with the boiler; the coal economizer is connected with the water inlet pipeline; the water replenishing pipeline is connected to the economizer; the heating pipeline is connected to the upper end of the boiler; the superheater is connected with the warming pipeline; an outgoing line connected to the superheater.
Further, in the embodiment of the present invention, the spray washing section further includes: a heater connected to the bottom of the washing tower; a first pipeline connected to the upper end of the heater; the second pipeline is connected to the lower end of the heater; one end of the conveying pipeline II is connected with the circulating pump, and the other end of the conveying pipeline II is connected with the conveying part; the demister is positioned at the top of the washing tower. The conveying pipeline IV is connected to the top end of the washing tower and is provided with a valve III;
further, in an embodiment of the present invention, the apparatus for treating waste gas and wastewater further includes: an emergency protection unit, the emergency protection unit further having: a first fan is arranged between the fifth conveying pipeline and the fourth conveying pipeline; the emergency pipeline is connected to the outlet of the first fan, and a fourth valve is arranged on the emergency pipeline; the activated carbon adsorption tank is connected with the emergency pipeline;
further, in an embodiment of the present invention, the emergency protection unit further includes: an LEL detector located at the front end of the transport line four; the exhaust pipe is arranged on the top of the activated carbon adsorption tank; and the nitrogen pipeline is connected to the right side of the body of the activated carbon adsorption tank.
Further, in an embodiment of the present invention, the incineration portion further has: a fuel pipeline connected to the top of the waste gas and liquid incinerator, wherein a control valve is mounted on the fuel pipeline to adjust the fuel quantity; and the combustion-supporting fan is positioned between the fifth conveying pipeline and the sixth conveying pipeline.
Further, in an embodiment of the present invention, the incineration portion further has: the gas transmission pipeline is connected to the combustion fan, and a valve six is mounted on the gas transmission pipeline to control the gas flow; the silencer is arranged on the gas transmission pipeline.
Further, in the embodiment of the present invention, the gas transmission portion further has: the first injector is arranged at the joint of the first exhaust gas pipeline and the spray tower; and the second ejector is arranged at the joint of the second exhaust gas pipeline and the spray tower.
Further, in the embodiment of the present invention, a port of the second gas line connected to the conveying part is divided into two connection ports, which are respectively connected to the first ejector and the second ejector.
Has the advantages that: the utility model is a waste gas and liquid treatment device, through setting up and spraying washing department and burning department, spray washing and high-temperature burning treatment to the waste gas and liquid produced in the production run of polyester resin, have treated the waste gas and liquid effectively, the treatment mode is more stable and more reliable; in the treatment process, secondary wastewater and other waste substances can not be generated, the combustion heat is recycled, and the steam is byproduct, so that the energy is saved and the environment is protected.
Description of the drawings:
fig. 1 is a schematic front view of an apparatus for treating waste gas and waste liquid according to an embodiment of the present invention.
In the attached drawings
1. A first exhaust gas pipeline 2, a second exhaust gas pipeline 3, a first ejector 4, a second ejector 5, and a washing tower
6. Feed line 7, heater 8, first pipeline 9, second pipeline 10, discharge line
11. Circulating pump 12, first conveying pipeline 13, second conveying pipeline 14, third conveying pipeline 15 and fourth conveying pipeline
16. First fan 17, fifth conveying pipeline 18, combustion fan 19, sixth conveying pipeline 20 and silencer
21. Gas transmission line 22, emergency pipeline 23, activated carbon adsorption tank 24, exhaust pipe 25 and nitrogen pipeline
26. Waste gas and waste liquid incinerator 27, fuel pipeline 28, waste liquid pipeline 29, heat exchange fin 30 and boiler
31. A water replenishing pipeline 32, an economizer 33, a water inlet pipeline 34, a heating pipeline 35 and a superheater
36. Delivery line 37, exhaust fan 38, chimney 39, demister 40, LEL detector
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clear and fully described, embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of some embodiments of the utility model and are not limiting of the utility model, and that all other embodiments obtained by those of ordinary skill in the art without the exercise of inventive faculty are within the scope of the utility model.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "a," "an," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
For the purposes of simplicity and explanation, the principles of the embodiments are described by referring mainly to examples. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments. But it is obvious. To one of ordinary skill in the art, the embodiments may be practiced without limitation to these specific details. In some instances, well-known methods and structures have not been described in detail so as not to unnecessarily obscure the embodiments. In addition, all embodiments may be used in combination with each other.
The first embodiment is as follows:
as shown in fig. 1, the present embodiment discloses an apparatus for treating waste gas and waste liquid, which comprises: conveying part, spraying and washing part, burning part, heat exchange part and emergency protection part.
The conveying part is provided with a waste gas pipeline I1 and a waste gas pipeline II 2, the waste gas pipeline I1 is mainly used for collecting waste gas collected by a flaking machine head and collecting gas which is obtained after a water tank of a sewage treatment station matched with production is covered and sealed, and the two waste gases are mainly air; the inside of the waste gas pipeline II 2 is provided with three waste gases which are mainly nitrogen and are exhausted by a breather valve of a storage tank in the raw material tank area, the reaction kettle in the esterification stage and a vacuum pump in the condensation stage; the right side of the waste gas pipeline I1 is provided with a first ejector 3, the right side of the waste gas pipeline II 2 is provided with a second ejector 4, waste gas in the waste gas pipeline I1 is subjected to dust particle removal through the first ejector 3 and enters the spraying and washing part, and waste gas in the waste gas pipeline II 2 is subjected to small liquid droplet removal through the second ejector 4 and then enters the spraying and washing part; and the first waste gas pipeline 1 and the second waste gas pipeline 2 are respectively provided with a first regulating valve and a second regulating valve which are used for regulating and controlling the pressure in the pipelines.
The spraying and washing part is arranged on the right side of the conveying part and is provided with a washing tower 5, a waste gas pipeline I1 and a waste gas pipeline II 2 are connected with the washing tower 5, gas in the waste gas pipeline I1 enters the middle part of the washing tower 5 through an ejector I3, gas in the waste gas pipeline II 2 enters the lower part of the washing tower 5 through an ejector II 4, waste gas mainly comprising nitrogen is in the waste gas pipeline II 2, the concentration of VOCs (volatile organic compounds) of the waste gas possibly exceeds 25% LEL (Lel), and the waste gas cannot be directly mixed with waste gas mainly comprising air in the waste gas pipeline I1, otherwise, safety risk exists; the left side of the washing tower 5 is also provided with a feeding pipeline 6 for adding absorption liquid required by washing, the absorption liquid has the characteristic of being similar to and compatible with the components of the polyester resin waste gas, the main component of the absorption liquid is an organic mixture of C5-C10 straight chain or branched chain low-volatility alcohol and esters, the absorption liquid belongs to heavy component waste liquid in the production process of upstream raw materials of the polyester resin industrial chain, the concentration of VOCs in the waste gas can be well reduced, and the volatility of the waste gas is very low; the bottom of the washing tower 5 is also provided with a heater 7, the upper part of the heater 7 is connected with a first pipeline 8, the lower part of the heater 7 is connected with a second pipeline 9, the heater 7 is used for heating the absorption liquid, low-pressure steam is discharged from the first pipeline 8 and is discharged from the second pipeline 9 after heat exchange and temperature rise, so that the absorption liquid can keep good fluidity in a low-temperature environment; the bottom of the washing tower 5 is also provided with a discharge pipeline 10, the discharge pipeline 10 is connected with a circulating pump 11, the right side of the circulating pump 11 is connected with three pipelines, one pipeline is a first conveying pipeline 12, the other end of the first conveying pipeline is connected to the top of the washing tower 5, the other pipeline is a second conveying pipeline 13, the other end of the second conveying pipeline is divided into two branches which are respectively connected with a first ejector 3 and a second ejector 4, absorption liquid is sent to the first ejector 3 and the second ejector 4 through the first conveying pipeline 13 to be mixed with waste gas and liquid in a first waste gas pipeline 1 and a second waste gas pipeline 2, dust particles and small liquid droplets are removed, the last pipeline is a third conveying pipeline 14, and the other end of the third conveying pipeline is connected with an incinerator of the incineration part; the top of the washing tower 5 is also provided with a demister 39.
The absorbent is added from the feeding pipeline 6, and a part of the absorbent is driven by the circulating pump 11 to enter the liquid phase interface of the ejector through the second conveying pipeline 13 and is ejected from the nozzle at a high speed, and is fully mixed with the gas and liquid of the waste gas entering from the gas phase interface of the ejector, so that the effect of washing dust particles and small liquid drops contained in the gas phase is achieved; a part of the absorbent reaches the top of the washing tower 5 through a first conveying pipeline 12 for spraying; and the gas in the waste gas pipeline II 2 enters the lower part of the washing tower 5 after small liquid drops are removed by the ejector II 4, and the concentration of VOCs in the waste gas can be fully reduced after spraying and washing, so that the concentration of VOCs in the washed waste gas is ensured to be below 25% LEL. And the gas in the waste gas pipeline I1 enters the middle part of the washing tower 5 after dust is removed by the ejector I3, and the concentration of VOCs is fully reduced by spraying and washing. Lower part nitrogen gas waste gas after the washing can mix with the air waste gas safety at middle part, and mixed waste gas VOCs concentration only can be lower than nitrogen gas waste gas, does not have the explosion risk, and after the defroster at 5 tops of washing tower of mixed waste gas process pipeline four 15, fan 16, pipeline five 17 go to subsequent waste gas waste liquid and burn burning furnace again, participate in burning as the combustion-supporting air who burns burning furnace.
The emergency protection part is connected with the spraying washing part through a fourth conveying pipeline 15.
The burning part is arranged at the right side of the spraying and washing part, the burning part is mainly provided with a waste gas and waste liquid burning furnace 26, the left side of the burning furnace is connected with a third conveying pipeline 14, a valve is arranged on the third conveying pipeline 14, the valve on the third conveying pipeline 14 controls the liquid level in the washing tower 5, along with the continuous feeding in the feeding pipeline 6, the third conveying pipeline 14 also continuously discharges absorption rich liquid to the burning furnace, the absorption rich liquid is also an organic material, has a certain burning heat value and is used as the fuel of the burning furnace to be introduced into the burning furnace for burning treatment; the incinerator right side is connected with waste liquid pipeline 28, can produce esterification waste water and polycondensation waste water in the polyester resin production process, these two strands of waste water can be alone or merge and insert in waste gas waste liquid incinerator 26 through waste liquid pipeline 28, absorb the heat supply of rich liquid fuel as pipeline three 14, ensure that furnace combustion temperature reaches the technological requirement of thoroughly burning decomposition with waste gas waste liquid, waste water sprays into furnace after the nozzle atomizing through compressed air, burns under the in-furnace process temperature and handles. The upper end of the incinerator is connected with a conveying pipeline six 19; the conveying pipeline five 17 is provided with a combustion-supporting fan 18, the lower end of the combustion-supporting fan 18 is connected with a conveying pipeline six 19, the combustion-supporting fan 18 is used for sucking mixed waste gas in the conveying pipeline five 17, the waste gas enters the waste gas and waste liquid incinerator 26 through the conveying pipeline 19, the minimum air quantity of the combustion-supporting fan 18 in operation is not lower than the maximum air quantity of the conveying pipeline five 17, and therefore the incinerator can be guaranteed to completely absorb and treat all waste gas generated by the polyester resin production device under any load.
The upper end of the combustion fan 18 is also connected with a gas pipeline 21, the gas pipeline 21 is provided with a silencer 20, the gas pipeline 21 is used for conveying air to the waste gas and liquid incinerator 26, the gas pipeline 21 is provided with a valve, the air is controlled to be discharged through the regulating valve, and when excessive noise is generated by the discharged air, the silencer 20 can effectively reduce the noise;
the top end of the waste gas and liquid incinerator 26 is provided with a fuel pipeline 27, fuel gas is introduced from the top 26 of the waste gas and liquid incinerator through the fuel pipeline 27, the fuel pipeline 27 is provided with an adjusting valve, the amount of the introduced fuel is controlled by the adjusting valve according to the temperature in the incinerator, the temperature is lower than the process temperature, the opening of the adjusting valve is opened to increase the air inflow of the fuel gas, and the opening is closed otherwise. The maximum air input designed by the air pipeline 21 meets the maximum load of the incinerator, and the minimum air input of the fuel pipeline 27 corresponds to the required combustion air amount and cannot be smaller than the maximum air amount of the conveying pipeline five 17.
The heat exchanging portion is provided on the right side of the exhaust gas-liquid waste incinerator 26.
The flue gas meeting emission standards is finally discharged to the atmosphere through a stack 38 by means of a discharge fan 37.
This device all inserts the burning furnace with waste gas that produces in the polyester resin production activity and the waste water and the scrubbing tower absorption liquid that produce and burn the processing, the treatment effeciency reaches more than 99.6%, although consumed some fuel gas, these heats are recycled as far as possible, compared with the prior art, this device energy consumption is showing and is reducing, and can effectively solve the problem that the concentration of VOCs exceeds LEL 25%, and this device can not produce secondary waste water in the course of the treatment, and energy-concerving and environment-protective more, this device has still adopted automated control, make the manufacturing process more high-efficient stable.
Example two:
the device for treating the waste gas and the waste liquid has the same structural characteristics as the first embodiment, wherein as shown in fig. 1, an emergency protection part is connected with a spraying washing part through a fourth conveying pipeline 15, an LEL detector is arranged at the front end of the fourth conveying pipeline 15 and used for monitoring the concentration of LEL, a first fan 16 is arranged on the right side of the LEL detector, the first fan 16 is used for pumping waste gas in the pipeline, two pipelines are connected to the right side of the first fan 16, one pipeline is a fifth conveying pipeline 17, the other pipeline is an emergency pipeline 22, an activated carbon adsorption tank 23 is connected to the right side of the emergency pipeline 22, an exhaust pipe 24 is arranged at the top end of the tank, and a nitrogen pipeline 25 is arranged on the right side of the tank; valves are arranged on the conveying pipeline five 17 and the emergency pipeline 22, when the LEL concentration of the waste gas meets the standard, the valve on the conveying pipeline five 17 is opened, and the waste gas in the pipeline enters the next treatment device through the conveying pipeline five 17; when the LEL detector detects that the concentration of the waste gas exceeds 25%, a valve on the emergency pipeline 22 is opened, the waste gas enters the activated carbon adsorption tank through the emergency pipeline 22 for adsorption, and then is discharged to the atmosphere from the emptying pipe, and the nitrogen pipeline 25 can discharge nitrogen to prevent the activated carbon from spontaneous combustion or wetting.
Example three:
a waste gas and liquid treatment device has the same structural characteristics as the first or second embodiment, wherein, as shown in FIG. 1, a heat exchanging part is arranged at the right side of a waste gas and liquid incinerator 26, the heat exchanging part comprises heat exchanging fins 29 which are connected with the waste gas and liquid incinerator 26, a boiler 30 is arranged at the upper end of each heat exchanging fin 29, a water inlet pipeline 33 is connected above the boiler 30, the other end of the water inlet pipeline 33 is connected with an economizer 32, the other end of the economizer 32 is connected with a water replenishing pipeline 31, demineralized water is replenished into the boiler 30 through the water replenishing pipeline 31, before entering the boiler 30, the demineralized water is heated through the economizer 32 and then enters the boiler 30 through the water inlet pipeline 33 to generate saturated steam; the boiler 30 upper end still is connected with intensification pipeline 34, intensification pipeline 34 other end is connected with over heater 35, be connected with outward pipeline 36 on the over heater 35, the high temperature flue gas after the waste gas waste liquid burns burning furnace 26 and has handled passes through heat transfer fin 29 with the heat transfer for the demineralized water in the boiler 30, demineralized water produces saturated steam through high temperature evaporation, steam gets into over heater 35 through intensification pipeline 34 and heats up once more and becomes superheated steam, then send out through outward pipeline 36, the waste heat of flue gas has been recycled as far as possible to the heat transfer portion, convert it into steam and use for the workshop.
Although the illustrative embodiments of the present application have been described above to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the embodiments, and various modifications within the spirit and scope of the present application defined and determined by the appended claims will be apparent to those skilled in the art from this disclosure.
Claims (10)
1. An apparatus for treating waste gas and liquid, comprising:
a spray washing section having:
the washing tower is used for spray washing;
a feed line disposed at the top of the scrub column;
a discharge line disposed at the bottom of the washing column;
a conveying part disposed on the left side of the spray washing part, the conveying part having:
a first waste gas pipeline, wherein the first waste gas pipeline is connected to the middle part of the washing tower and is provided with a first regulating valve,
the waste gas pipeline II is connected to the lower part of the washing tower, and a regulating valve II is installed on the waste gas pipeline II;
an incineration portion connected with the washing tower, the incineration portion having:
the conveying pipeline III is connected with the washing tower and is provided with a valve V;
the waste gas and liquid incinerator is connected to the other end of the conveying pipeline III;
a waste liquid pipeline connected to a furnace body of the waste gas and waste liquid incinerator;
and the conveying pipeline six is connected to the furnace body of the waste gas and waste liquid incinerator.
2. The exhaust gas waste liquid treatment apparatus according to claim 1, wherein the spray washing section further comprises:
the circulating pump is connected to the other end of the discharge pipeline;
one end of the first conveying pipeline is connected to the circulating pump, and the other end of the first conveying pipeline is connected to the top of the washing tower.
3. The apparatus for treating waste gas and water according to claim 1, wherein the apparatus for treating waste gas and water further comprises:
a heat exchanging portion connected to the waste gas/liquid incinerator, the heat exchanging portion having:
the heat exchange fin is connected with the waste gas and waste liquid incinerator;
the boiler is arranged above the heat exchange fins;
a water inlet line connected with the boiler;
the coal economizer is connected with the water inlet pipeline;
the water replenishing pipeline is connected to the economizer;
the heating pipeline is connected to the upper end of the boiler;
the superheater is connected with the warming pipeline;
an outgoing line connected to the superheater.
4. The exhaust gas and wastewater treatment apparatus according to claim 2, wherein the spray scrubber section further comprises:
a heater connected to the bottom of the washing tower;
a first pipeline connected to the upper end of the heater;
the second pipeline is connected to the lower end of the heater;
one end of the conveying pipeline II is connected with the circulating pump, and the other end of the conveying pipeline II is connected with the conveying part;
the demister is positioned at the top of the washing tower.
And the conveying pipeline four is connected to the top end of the washing tower, and a valve three is arranged on the conveying pipeline four.
5. The apparatus for treating exhaust gas wastewater according to claim 4, further comprising:
an emergency protection unit, the emergency protection unit further having:
a first fan is arranged between the fifth conveying pipeline and the fourth conveying pipeline;
the emergency pipeline is connected to the outlet of the first fan, and a fourth valve is arranged on the emergency pipeline;
the activated carbon adsorption tank is connected with the emergency pipeline.
6. The exhaust gas/wastewater treatment apparatus according to claim 5, wherein the emergency guard further comprises:
an LEL detector located at the front end of the transport line four;
the exhaust pipe is arranged on the top of the activated carbon adsorption tank;
and the nitrogen pipeline is connected to the right side of the body of the activated carbon adsorption tank.
7. The apparatus for treating exhaust gas and waste water according to claim 1, wherein the incineration section further comprises:
a fuel pipeline connected to the top of the waste gas and liquid incinerator, wherein a control valve is mounted on the fuel pipeline to adjust the fuel quantity;
and the combustion-supporting fan is positioned between the fifth conveying pipeline and the sixth conveying pipeline.
8. The apparatus for treating exhaust gas and waste water according to claim 7, wherein the incineration section further comprises:
the gas transmission pipeline is connected to the combustion fan, and a valve six is mounted on the gas transmission pipeline to control the gas flow;
the silencer is arranged on the gas transmission pipeline.
9. The apparatus for treating waste gas and liquid according to claim 1, wherein the gas transmission unit further comprises:
the first injector is arranged at the joint of the first exhaust gas pipeline and the spray tower;
and the second ejector is arranged at the joint of the second exhaust gas pipeline and the spray tower.
10. The waste gas and water treatment device according to claim 3, wherein the port of the second gas pipeline connected with the conveying part is divided into two connecting ports which are respectively connected with the first ejector and the second ejector.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114573136A (en) * | 2022-01-18 | 2022-06-03 | 天津天智精细化工有限公司 | Electrostatic demisting and washing method for fatty alcohol ether sulfonated tail gas |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114573136A (en) * | 2022-01-18 | 2022-06-03 | 天津天智精细化工有限公司 | Electrostatic demisting and washing method for fatty alcohol ether sulfonated tail gas |
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