Pyrolysis waste gas treatment system

Abstract

The utility model relates to a pyrolysis waste gas treatment system which comprises a pyrolysis gasification reactor, an outlet of the pyrolysis gasification reactor is sequentially connected with a dust remover, a condensation pipe, an impurity removal and purification box, a filter and a flue gas analyzer through pipelines, and the outlet end of the condensation pipe is further connected with a condensate recovery device through a pipeline; a spiral air pipe is wound on the outer surface of the dust remover; the impurity removal purifying box comprises a purifying box body, an air inlet pipe, an air outlet pipe, a circulating pump and a spraying head, a solvent is arranged in the purifying box body, the air inlet pipe is arranged on one side in the purifying box body, the air outlet pipe and the spraying head hung through a support are arranged at the upper end in the purifying box body, a connecting pipe is arranged at the bottom end of one side of the purifying box body, and one end of the connecting pipe is communicated with the purifying box body; the other end is communicated with the sprinkler head through the circulating pump; the system can be used for laboratory experiments, waste gas obtained after pyrolysis is treated, waste salt is effectively recycled, the waste gas is subjected to component analysis after efficient purification treatment, the pyrolysis gasification reactor is adjusted, and the pyrolysis effect and efficiency are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a waste gas treatment system, concretely relates to a pyrolysis waste gas treatment system belongs to waste gas treatment technical field. BACKGROUND

[0002] With the advance of industrialization, our country industrial output value improves increasingly, but the number of industrial waste rises rapidly in turn, and the environment pollution liquid is increasingly serious, seriously influence the people life and property safety in pollution area. Among them, the salt-containing waste produced in chemical, electronic and pharmaceutical industry fields contains a large amount of organic pollutants, mainly some alcohol, benzene ring substances and the like, if such waste is not effectively disposed, not only has a great impact on the environment, but also salt as an important chemical raw material will cause great resource waste if not disposed.

[0003] At present, the treatment of such industrial waste mainly adopts incineration and landfill, biological treatment, pyrolysis gasification and other ways, the incineration process is high in cost on the one hand, and the fly ash generated thereby also causes secondary pollution on the other hand, and the incineration and landfill needs large area of land and is high in cost; the biological treatment is long in treatment time, unstable in efficiency and may cause secondary pollution of odor during the treatment process; the pyrolysis and gasification treatment method also belongs to thermochemical method, which overcomes the defects of traditional solid waste treatment method such as large occupation area, high cost, secondary pollution to atmosphere and underground water, realizes the resource utilization of waste, and achieves the "three" goals of waste reduction, wasteless and wasteless treatment.

[0004] At present, there are many research teams in China engaged in the research of salt-containing waste pyrolysis, but in the existing laboratory research equipment, the waste gas after pyrolysis is directly discharged after simple filtration treatment, such as the patent CN207298981U organic solid waste pyrolysis waste gas recycling device, which comprises a tempering device, a waste gas burner, a waste gas combustion chamber, a flue gas heat exchanger and a flue gas dust remover, so that the unstable pyrolysis gas is treated by incineration to provide relatively stable heat for system heat supply, which is low in use cost, convenient to popularize, does not damage the environment and saves energy, but the waste gas after pyrolysis still contains waste salt to different degrees, the device cannot further effectively recover, wastes resources, and cannot be adjusted in real time, the pyrolysis effect is poor, and the working efficiency is low.

[0005] Therefore, it is urgent for the technical personnel in the field to develop a pyrolysis waste gas treatment system which can overcome the above-mentioned shortcomings and is used for efficient experimental research. UTILITY MODEL CONTENT

[0006] The utility model wants to solve the technical problem, overcome prior art's shortcoming, provide a pyrolysis waste gas treatment system, the system can be used for laboratory experiment uses, the waste gas after containing salt waste pyrolysis is handled, effectively recovers waste salt in waste gas, and after high -efficient purification treatment of waste gas, the component analysis is carried out to understand pyrolysis process, and adjust pyrolysis gasification reactor, improve pyrolysis rate.

[0007] In order to solve above technical problem, the utility model provides a pyrolysis waste gas treatment system, including pyrolysis gasification reactor, the outlet of pyrolysis gasification reactor is connected in proper order through pipeline dust remover, condenser pipe, impurity removal purification tank, filter and flue gas analyzer, the export end of condenser pipe is also connected with condensate recovery device through pipeline,

[0008] The outer surface of dust remover is wound with spiral air pipe, one end of spiral air pipe is connected with the export end of pyrolysis gasification reactor through pipeline, and the other end is connected with the import end of dust remover through pipeline,

[0009] Impurity removal purification tank includes purification tank body, air inlet pipe, air outlet pipe, circulating pump and spray head, solvent is arranged in purification tank body, one side in purification tank body is provided with air inlet pipe, one end of air inlet pipe is connected with the export end of condenser pipe, and the other end is inserted into solvent, the upper end in purification tank body is provided with air outlet pipe and spray head hung through support, air outlet pipe is located above spray head, spray head is located above solvent, the export of air outlet pipe is connected with filter, and the bottom end of one side of purification tank body is provided with connecting pipe, one end of connecting pipe is communicated with purification tank body, and the other end is communicated with spray head through circulating pump.

[0010] The utility model further defined technical scheme is:

[0011] Further, the pyrolysis waste gas treatment system further includes a PLC controller, and the pyrolysis gasification reactor is provided with a temperature sensor and a pressure sensor, and the flue gas analyzer, the temperature sensor, the pressure sensor, and the pyrolysis gasification reactor are electrically connected to the PLC controller.

[0012] Technical effects, the utility model discloses a controller controls, so that flue gas analyzer controls pyrolysis gasification reactor after analysis, effectively improves pyrolysis rate.

[0013] In the pyrolysis waste gas treatment system, one end of the condenser pipe is connected to the dust remover through a pipeline, and the other end is provided with two outlet pipes, one of which is connected to the import end of the impurity removal purification tank to transport non-condensable gas, and the other is connected to the recovery device to recover the condensate.

[0014] Technical effects, the utility model sets up condenser pipe, and the waste gas is cooled, and the condensate containing salt is recovered by inclining the condenser pipe, and the condensate is effectively recovered in the recovery device, and the resources are recycled.

[0015] The recycling device comprises a recycling tank, an upper end of the recycling tank is connected with an outlet end of the condensing pipe through a pipeline, a filter plate is horizontally arranged in a middle part of the recycling tank, a discharging pipe is arranged on one side of the recycling tank, and a discharging valve is arranged on the discharging pipe.

[0016] The technical effect is that the recycling tank is arranged to recycle the condensed liquid, the filter plate is arranged to preliminarily filter the condensed liquid during recycling, and then the filtrate is subjected to subsequent evaporation crystallization to recycle waste salt.

[0017] The recycling device comprises a recycling tank, an upper end of the recycling tank is connected with an outlet end of the condensing pipe through a pipeline, a filter plate is horizontally arranged in a middle part of the recycling tank, a discharging pipe is arranged on one side of the recycling tank, and a discharging valve is arranged on the discharging pipe.

[0018] The technical effect is that the recycling tank is arranged to recycle the condensed liquid, the filter plate is arranged to preliminarily filter the condensed liquid during recycling, and then the filtrate is subjected to subsequent evaporation crystallization to recycle waste salt.

[0019] The recycling device comprises a recycling tank, an upper end of the recycling tank is connected with an outlet end of the condensing pipe through a pipeline, a filter plate is horizontally arranged in a middle part of the recycling tank, a discharging pipe is arranged on one side of the recycling tank, and a discharging valve is arranged on the discharging pipe.

[0020] The technical effect is that the recycling tank is arranged to recycle the condensed liquid, the filter plate is arranged to preliminarily filter the condensed liquid during recycling, and then the filtrate is subjected to subsequent evaporation crystallization to recycle waste salt.

[0021] The beneficial effect of the utility model is:

[0022] The utility model discloses a dust remover is set up after pyrolysis gasification reactor and carries out dust removal, and part of industrial waste salt and dust carried in flue gas is intercepted by physical means, improves the quality of waste gas, and the accurate analysis of subsequent flue gas analyzer is convenient, and the progress of pyrolysis and analysis are convenient to understand, and the pyrolysis gasification reactor is also better controlled and adjusted, and the pyrolysis rate is improved.

[0023] The utility model discloses a dust remover is set up after pyrolysis gasification reactor and carries out dust removal, and part of industrial waste salt and dust carried in flue gas is intercepted by physical means, improves the quality of waste gas, and the accurate analysis of subsequent flue gas analyzer is convenient, and the progress of pyrolysis and analysis are convenient to understand, and the pyrolysis gasification reactor is also better controlled and adjusted, and the pyrolysis rate is improved.

[0024] The utility model discloses not only carry out filter gas washing purification gas to the condensation recovery of waste gas simultaneously, but also set up the analyzer and PLC controller, and pyrolysis gasification is equipped with temperature sensor and pressure sensor, and the temperature and pressure of pyrolysis gasification reactor are controlled and adjusted through PLC controller after the result of analyzer analysis, adjust the state of pyrolysis, improve the pyrolysis rate, play automatic regulation, improve work efficiency.

[0025] The utility model discloses to the waste gas after condensation set up the impurity removal purification box, carry out further impurity removal to the waste gas, in order to more accurate analysis behind, set up the circulating pump to the solvent in the purification box body when purifying, simultaneously, the solvent is from the upper two lower spraying, the gas that passes through solvent washing is washed again through the solvent of spraying, and the solvent of spraying will bubble that comes out from the solvent scatter, and smaller bubble contacts the solvent again, and further washing improves the purification effect, and removes the impurity maximization.

[0026] The structure of the impurity removal purification box of the utility model makes the washing solvent and the waste gas can contact uniformly, the solvent consumption is less, the waste gas purification efficiency is higher, the cost consumption is less, the treated waste gas can be directly detected, guarantees that the waste gas purification effect is good, and the solvent and the spraying solvent are double -set between, are favorable to multiple purification to the waste gas, make the waste gas purification effect improve, guarantee the treatment effect of the waste gas of purification tank, make the waste gas can have more efficient chemical reaction between the solvent in unit time, improve the utilization of solvent, set up the delivery fan on the outlet end of the exhaust pipe, provide power suction to the waste gas, make the waste gas enter the next link, avoid the waste gas because of the density, and stay in the exhaust pipeline, do not get the expected purification effect, set up the flue gas analyzer and directly detect the waste gas, convenient to determine the waste gas composition, know the reaction process of pyrolysis gasification reactor, and adjust it properly, improve the pyrolysis rate, because the pyrolysis is the process of pressure increase, the utility model sets up the delivery fan on each connecting pipeline according to the need and ensures the normal operation of work, and the delivery fan suction power requirement is less, and the energy consumption is reduced, and the work efficiency is improved.

[0027] The utility model discloses pyrolysis waste gas treatment system can be used in laboratory experiment, and the waste gas after pyrolysis of containing salt waste is handled, and the waste salt in waste gas is effectively recovered, and the composition analysis monitoring relevant experimental results are carried out after the efficient purification treatment of waste gas, and the pyrolysis gasification reactor can be adjusted according to the result, and the pyrolysis rate is improved. ACCURACY

[0028] Figure 1 It is the structure schematic drawing of pyrolysis waste gas treatment system of the utility model embodiment;

[0029] Figure 2 It is Figure 1 The structure schematic drawing of impurity removal purification box in;

[0030] In the figure: 1-pyrolysis gasification reactor, 2-dust remover, 3-condenser tube, 4-impurity removal purification tank, 41-purification tank body, 42-gas inlet pipe, 43-gas outlet pipe, 44-circulating pump, 45-spraying head, 46-connection pipe, 5-filter, 6-smoke gas analyzer, 7-helical air pipe, 8-sampling pump, 9-recovery tank, 10-filter plate, 11-outlet pipe, 12-water collecting tank, 13-circulating water pump. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. The technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Embodiment 1

[0032] The present embodiment provides a pyrolysis waste gas treatment system, referring to Figure 1 , comprising a pyrolysis gasification reactor 1, the outlet of the pyrolysis gasification reactor 1 is connected in sequence through pipelines to a small dust remover for laboratory 2, a condenser tube 3, an impurity removal purification tank 4, a filter 5 for laboratory and a smoke gas analyzer 6, a sampling pump 8 is further arranged between the filter 5 and the smoke gas analyzer 6, so as to facilitate smooth analysis of the waste gas and ensure normal operation, and the outlet end of the condenser tube 3 is further connected to a condensate recovery device through a pipeline;

[0033] Referring to Figure 1 , the outer surface of the dust remover 2 is wound with a helical air pipe 7, one end of the helical air pipe 7 is connected to the outlet end of the pyrolysis gasification reactor 1 through a pipeline, and the other end is connected to the inlet end of the dust remover 2 through a pipeline; the outlet end of the dust remover 2 is connected to the inlet end of the condenser tube 3, the outlet end of the condenser tube 3 is provided with two outlet pipes, one outlet pipe is connected to the inlet end of the impurity removal purification tank 4 to transport non-condensable gas, and the other outlet pipe is connected to the recovery device to recover the condensate, the condenser tube is inclinedly arranged through a support, and the end from which the condensate flows out is lower than the gas inlet end, the condenser tube is arranged to cool the discharged waste gas and recover the salt-containing condensate by inclining the condenser tube, the condensate is effectively recovered in the recovery device, resources are recycled, the outlet end of the impurity removal purification tank 4 is communicated with the filter 5 through a pipeline, and the outlet end of the filter 5 is connected to the smoke gas analyzer 6 through a pipeline and the sampling pump 8;

[0034] Referring to Figure 2The impurity removal and purification tank 4 comprises a sealed purification tank body 41, an air inlet pipe 42, an air outlet pipe 43, a circulating pump 44 and a spraying head 45. The purification tank body 41 is provided with a solvent, and a surfactant or an organic solvent can be provided according to requirements. The organic solvent can be sodium dodecyl sulfate. One side of the purification tank body 41 is provided with the air inlet pipe 42, one end of the air inlet pipe 42 is connected with the outlet end of the condenser pipe 3, and the other end is inserted into the solvent. The upper end of the purification tank body 41 is provided with the air outlet pipe 43 and the spraying head 45 which is hung by a support. The air outlet pipe 43 is located above the spraying head 45, and the spraying head 45 is located above the solvent. The outlet of the air outlet pipe 43 is connected with the filter 5. The bottom end of one side of the purification tank body 41 is provided with a connecting pipe 46. One end of the connecting pipe 46 is in communication with the purification tank body 41 and is located below the liquid level of the solvent. The other end of the connecting pipe 46 is in communication with the spraying head 45 through the circulating pump 44, so that the solvent can be circulated and sprayed.

[0035] In the embodiment, a PLC controller is further included. The pyrolysis gasification reactor 1 is provided with a temperature sensor and a pressure sensor. The flue gas analyzer 6, the temperature sensor, the pressure sensor and the pyrolysis gasification reactor 1 are electrically connected with the PLC controller. The controller is used for control, so that the pyrolysis gasification reactor can be controlled and adjusted after being analyzed by the flue gas analyzer, and the pyrolysis rate is effectively improved.

[0036] In the embodiment, the recovery device comprises a recovery tank 9. The upper end of the recovery tank 9 is connected with the outlet end of the condenser pipe 3 through a pipeline. A filter plate 10 is horizontally arranged in the middle of the recovery tank 9. A discharge pipe 11 is arranged on one side of the recovery tank 9. A discharge valve is arranged on the discharge pipe 11. The recovery tank is arranged to recover the condensed liquid. The filter plate is arranged to preliminarily filter the condensed liquid. Then, the filtrate is evaporated and crystallized through the discharge pipe and the discharge valve to recover waste salt.

[0037] In the embodiment, a water collecting tank 12 is further included. The water collecting tank 12 is provided with cooling water and a circulating water pump 13. The water inlet of the condenser pipe 3 is connected with the circulating water pump 13 in the water collecting tank 12 through a pipeline. The water outlet of the condenser pipe 3 is connected with the water collecting tank 12 through a pipeline. The water collecting tank 12 supplies water to the condenser pipe in circulation. The condenser pipe uses the water collecting tank to supply water, so that the water consumption can be controlled, resources can be saved, costs can be reduced, and the water collecting tank can supply water in circulation, so that the operator does not need to pay attention to the faucet all the time, and the use is more convenient. In addition, because the waste gas of pyrolysis first passes through the spiral air pipe to increase the flow length and time, the first wave of cooling is performed, then passes through the dust remover, and then reaches the condenser pipe. At this time, the temperature of the waste gas is far lower than the temperature of the waste gas just discharged from pyrolysis. Therefore, the circulating water supply of the water collecting tank is sufficient to condense the waste gas.

[0038] In the specific implementation, the industrial salt-containing waste is sent to the pyrolysis gasification reactor 1 under the action of the existing conveying machine, the pyrolysis gas is introduced into the dust collector 2 after spiraling in the spiral pipe 7 under the action of the conveying fan, and then the gas is introduced into the condensing pipe 3 under the action of the conveying fan, the non-condensable gas is conveyed to the impurity removal and purification tank after being cooled in the condensing pipe 3, the condensed liquid flows into the recovery device through the pipeline, and the recovery device collects and conveys the solid waste salt to the existing treatment device, the non-condensable gas is initially removed in the solvent in the impurity removal and purification tank, then the solvent is sprayed down by the circulating pump, the treated gas is removed again, and after double removal, the gas is sent to the existing filter 5 such as a sealed box provided with an activated carbon plate for filtration under the action of the conveying fan, the filtered gas is sampled by the sampling pump 8 and analyzed in the flue gas analyzer 6, the signal of the analysis result of the flue gas analyzer 6 is transmitted to the control module of the controller, the signal output end of the control module is connected with the pyrolysis gasification reactor 1, the temperature and pressure of the pyrolysis gasification reactor 1 are adjusted by the PLC controller according to the analysis result, so that the pyrolysis rate is improved, the oxygen, carbon monoxide and carbon dioxide in the waste gas are detected by the flue gas analyzer, the pyrolysis process is understood according to the corresponding gas content, if the oxygen is detected, it indicates that the pyrolysis has not started and the combustion reaction is still in progress, if the oxygen cannot be detected, it indicates that the pyrolysis has started, when the carbon monoxide and carbon dioxide are detected, it indicates that the pyrolysis is in progress, the temperature is increased to improve the pyrolysis speed during the pyrolysis, when the carbon monoxide is detected to decrease until zero, it indicates that the pyrolysis is completed, the process parameters of the pyrolysis gasification reactor can be adjusted, the energy consumption is reduced, and the whole pyrolysis process is effectively understood.

[0039] In addition to the above embodiments, the utility model can also have other implementation manners. Any technical solution formed by equivalent replacement or equivalent transformation falls within the protection scope required by the utility model.

Claims

1. A pyrolysis off-gas treatment system, characterized by: Including pyrolysis gasification reactor (1), the outlet of pyrolysis gasification reactor (1) is sequentially connected by pipeline to dust remover (2), condenser pipe (3), impurity removal purification tank (4), filter (5) and flue gas analyzer (6), the outlet end of condenser pipe (3) is also connected with condensate recovery device by pipeline; The outer surface of dust remover (2) is wound with spiral air pipe (7), one end of spiral air pipe (7) is connected with the outlet end of pyrolysis gasification reactor (1) by pipeline, and the other end is connected with the inlet end of dust remover (2) by pipeline; The impurity removal purification tank (4) includes a purification tank body (41), an air inlet pipe (42), an air outlet pipe (43), a circulating pump (44) and a spray head (45), the purification tank body (41) is provided with a solvent, one side of the purification tank body (41) is provided with the air inlet pipe (42), one end of the air inlet pipe (42) is connected with the outlet end of the condenser pipe (3), and the other end is inserted into the solvent, the upper end of the purification tank body (41) is provided with the air outlet pipe (43) and the spray head (45) suspended by a support, the air outlet pipe (43) is located above the spray head (45), the spray head (45) is located above the solvent, the outlet of the air outlet pipe (43) is connected with the filter (5), and the bottom of one side of the purification tank body (41) is provided with a connecting pipe (46), one end of the connecting pipe (46) is communicated with the purification tank body (41), and the other end is communicated with the spray head (45) through the circulating pump (44).

2. The pyrolysis off gas treatment system of claim 1, wherein: It also includes a PLC controller, the pyrolysis gasification reactor (1) is provided with a temperature sensor and a pressure sensor, and the flue gas analyzer (6), the temperature sensor, the pressure sensor and the pyrolysis gasification reactor (1) are electrically connected with the PLC controller.

3. The pyrolysis off gas treatment system of claim 1, wherein: One end of the condenser pipe (3) is connected with the dust remover (2) by pipeline, and the other end is provided with two outlet pipes, one outlet pipe is connected with the inlet end of the impurity removal purification tank (4) to transport non-condensable gas, and the other outlet pipe is connected with the recovery device to recover condensate.

4. The pyrolysis off gas treatment system of claim 1, wherein: The recovery device includes a recovery tank (9), the upper end of the recovery tank (9) is connected with the outlet end of the condenser pipe (3) by pipeline, a filter plate (10) is horizontally arranged in the middle of the recovery tank (9), a discharge pipe (11) is arranged on one side of the recovery tank (9), and a discharge valve is arranged on the discharge pipe (11).

5. The pyrolysis off gas treatment system of claim 1, wherein: It also includes a water collecting tank (12), the water collecting tank (12) is provided with cooling water and a circulating water pump (13), the water inlet of the condenser pipe (3) is connected with the circulating water pump (13) in the water collecting tank (12) by pipeline, and the water outlet of the condenser pipe (3) is communicated with the water collecting tank (12) by pipeline.

6. The pyrolysis off gas treatment system of claim 1, wherein: A sampling pump (8) is arranged between the filter (5) and the flue gas analyzer (6).

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