CN111298599A - Energy-saving low-cost waste gas treatment system - Google Patents
Energy-saving low-cost waste gas treatment system Download PDFInfo
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- CN111298599A CN111298599A CN202010089050.7A CN202010089050A CN111298599A CN 111298599 A CN111298599 A CN 111298599A CN 202010089050 A CN202010089050 A CN 202010089050A CN 111298599 A CN111298599 A CN 111298599A
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- fan
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/06—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
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Abstract
The invention relates to an energy-saving low-cost waste gas treatment system which comprises a zeolite rotating wheel system, a catalytic system, an electric heater, a concentration fan and a desorption fan, wherein the gas outlet end of the concentration fan is communicated with an adsorption area of the zeolite rotating wheel system, the adsorption area of the zeolite rotating wheel system is communicated with a flue, the desorption area of the zeolite rotating wheel system is communicated with the electric heater, the other end of the electric heater is communicated with the catalytic system, the catalytic system is communicated with a cooling reuse area of the zeolite rotating wheel system, the gas outlet of the cooling reuse area of the zeolite rotating wheel system is communicated with the desorption fan, and the desorption fan is communicated with a. The invention does not need a heat exchanger, and simultaneously utilizes the heat of the purified tail gas, thereby achieving the effects of saving equipment investment, low operating cost and small equipment floor area; when exhaust gas concentration is lower, the high-concentration exhaust gas desorbed through backflow decomposition can improve inlet concentration, so that the desorbed concentration is improved, higher concentration rate is realized, the consumption of electric heating is reduced, and the purpose of energy conservation is achieved.
Description
Technical Field
The invention relates to the technical field of waste gas treatment, in particular to an energy-saving low-cost waste gas treatment system.
Background
The waste gas generated by the industries of paint spraying, chemical engineering, printing, coating, automobile paint manufacturing, printing ink printing and dyeing, papermaking, injection molding, coating, electronic product production and the like has the characteristics of large air volume, low concentration and various organic components. The waste gas treatment system mainly comprises a pretreatment device, a zeolite concentration rotating wheel, a heat exchanger, an electric heating device, a catalytic combustion device, a fan, a chimney and the like.
The system utilizes three continuous temperature-changing adsorption-desorption procedures of adsorption-desorption-concentration to concentrate the low-concentration and large-air-volume organic waste gas into high-concentration and small-flow concentrated gas. Through the rotation of runner, can accomplish gaseous desorption and the process of recycling of runner simultaneously on the runner, the organic waste gas that gets into concentrated runner is directly discharged to the atmosphere after being adsorbed and purified by the runner under normal atmospheric temperature, then gets into the desorption district because of the rotation of runner, the runner of having adsorbed organic matter is desorption in this district, the high concentration waste gas that the desorption got off gets into subsequent catalytic oxidation processing system, the desorption hot-gas flow of concentrated runner of zeolite is regarded as to the gas after the purification, and the waste gas after the absorption is up to standard through the chimney and is discharged. The operation is circulated in such a way.
The conventional waste gas treatment process comprises the following steps: the exhaust gas is pretreated (filter, particulate matter concentration is less than 1 mg/Nm)3) The waste gas enters a zeolite rotating wheel for adsorption-desorption, the clean gas after adsorption treatment is discharged into the atmosphere from a chimney, the waste gas with large air volume and low concentration is desorbed into low air volume and high concentration by high-temperature hot gas flow and enters a catalytic system for catalytic oxidation, the released heat can be subjected to heat exchange utilization by a heat exchanger, one part of the heat can be used for the desorption of the rotating wheel, the other part of the heat can be used for the pre-pyrolysis desorption of the inlet waste gas, and when the temperature of the preheated waste gas does not reach the catalytic temperature of a catalytic reactor, the heat can be completed by an electric heater.
In the existing treatment process, two heat exchangers are needed for adjusting the temperature, and the defects of high investment cost, complex installation, large occupied space and the like exist.
Disclosure of Invention
The invention aims to provide an energy-saving low-cost waste gas treatment system, which is used for solving the problems of high investment cost, complex installation and large occupied space of the waste gas treatment system in the prior art.
The invention provides an energy-saving low-cost waste gas treatment system which comprises a zeolite runner system, a catalytic system, an electric heater, a concentration fan and a desorption fan, wherein the zeolite runner system comprises an adsorption region, a desorption region and a cooling and recycling region, the concentration fan is arranged on an air inlet pipe, the air outlet end of the concentration fan is communicated with the adsorption region of the zeolite runner system, the adsorption region of the zeolite runner system is communicated with a flue through an air outlet pipe, the desorption region of the zeolite runner system is communicated with the electric heater through a pipeline, the other end of the electric heater is communicated with the catalytic system, the catalytic system is communicated with the cooling and recycling region of the zeolite runner system, the air outlet of the cooling and recycling region of the zeolite runner system is communicated with the desorption fan, and the desorption fan is communicated with the air inlet.
Further, a filter is arranged between the concentration fan and the zeolite rotating wheel system.
Furthermore, a fresh air inlet pipe is arranged between the concentration fan and the filter.
Furthermore, an emergency bypass pipeline is arranged between the concentration fan and the filter and communicated to the flue.
Further, the rear end of the desorption fan is also provided with an air return pipeline which is communicated to the electric heater.
The technical scheme of the invention has the beneficial effects that:
through process change, the invention solves the problem that two heat exchangers are needed in the conventional method, does not need the heat exchangers, and simultaneously utilizes the heat of purified tail gas, thereby achieving the effects of saving equipment investment, low operating cost, small equipment floor area and skid-mounted transportation of the equipment; simultaneously, when exhaust gas concentration is lower, the high concentration exhaust gas of desorption is separated through the backward flow and the entry concentration can be promoted, and then the concentration of desorption is separated in the promotion, realizes higher concentration rate, reduces the consumption of electrical heating, reaches energy-conserving purpose.
Drawings
FIG. 1 is a schematic diagram of an energy-saving and low-cost exhaust gas treatment system according to the present invention;
in the drawings, the components represented by the respective reference numerals are listed below:
1-zeolite runner system, 2-catalytic system, 3-electric heater, 4-concentration fan, 5-desorption fan, 6-air inlet pipe, 7-air outlet pipe, 8-flue, 9-filter, 10-fresh air inlet pipe, 11-emergency bypass pipeline and 12-air return pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.
As shown in figure 1, the invention provides an energy-saving low-cost waste gas treatment system, which comprises a zeolite runner system 1, a catalytic system 2, an electric heater 3, a concentration fan 4 and a desorption fan 5, the zeolite rotating wheel system 1 comprises an adsorption area, a desorption area and a cooling and recycling area, the concentration fan 4 is arranged on an air inlet pipe 6, the air outlet end of the concentration fan 4 is communicated with the adsorption area of the zeolite runner system 1, the adsorption area of the zeolite runner system 1 is communicated with a flue 8 through an air outlet pipe 7, the desorption zone of the zeolite runner system 1 is connected with an electric heater 3 through a pipeline, the other end of the electric heater 3 is communicated with a catalytic system 2, the catalytic system 2 is communicated with a cooling recycling area of the zeolite rotating wheel system 1, an air outlet of the cooling recycling area of the zeolite rotating wheel system 1 is communicated with a desorption fan 5, and the desorption fan 5 is communicated to an air inlet pipe 6.
Specifically, a filter 9 is arranged between the concentration fan 4 and the zeolite rotating wheel system 1 and used for removing particulate matters in the exhaust gas to meet the air inlet requirement (the particulate matters are less than 1 mg/Nm) of the zeolite rotating wheel system 13)。
Specifically, a fresh air inlet pipe 10 is arranged between the concentration fan 4 and the filter 9, an emergency bypass pipeline 11 is arranged between the concentration fan 4 and the filter 9, and the emergency bypass pipeline 11 is communicated to the flue 8.
Specifically, the back end of the desorption fan 5 is further provided with an air return pipeline 12.
The work flow of the waste gas treatment system comprises the following steps: after the large air volume and low concentration waste gas is pretreated by the filter 9, the air intake requirement (the particulate matter is less than 1mg/Nm3) from the particulate matter in the waste gas to the zeolite runner system 1 is removed, then the waste gas is adsorbed and desorbed by the zeolite runner system 1, the completely adsorbed waste gas is discharged into the flue 8, the waste gas with the adsorbed organic matter is desorbed in a desorption area and then enters the subsequent catalytic system 2 for treatment, the high temperature tail gas which is completely treated by catalysis is taken as desorption hot gas flow to convert the large air volume and the low concentration into small air volume and high concentration waste gas, and then the waste gas is mixed with the cooling air volume of the zeolite runner system 1 and enters the catalytic system 2 for treatment, when the requirement of the catalytic temperature is not reached, the electric heater 3 is used for realizing, in addition, when the concentration of the waste gas is lower, the inlet concentration can be improved by refluxing, the higher concentration ratio is realized, the consumption of electric heating is reduced, and the purpose of energy conservation is achieved.
In conclusion, the invention solves the problem that two heat exchangers are needed in the conventional method through process change, does not need the heat exchangers, and simultaneously utilizes the heat of purified tail gas, thereby achieving the effects of saving equipment investment, low operation cost, small equipment floor area and skid-mounted transportation of the equipment; simultaneously, when exhaust gas concentration is lower, the high concentration exhaust gas of desorption is separated through the backward flow and the entry concentration can be promoted, and then the concentration of desorption is separated in the promotion, realizes higher concentration rate, reduces the consumption of electrical heating, reaches energy-conserving purpose.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides an energy-conserving low-cost exhaust-gas treatment system, its characterized in that, includes zeolite runner system, catalytic system, electric heater, concentrated fan and desorption fan, zeolite runner system includes adsorption zone, desorption district and cooling and recycles the district, concentrated fan is installed in the intake pipe, the end of giving vent to anger of concentrated fan communicates to the adsorption zone of zeolite runner system, the adsorption zone of zeolite runner system communicates to the flue through the outlet duct, the desorption district of zeolite runner system communicates electric heater through the pipeline, the other end intercommunication catalytic system of electric heater, the cooling of catalytic system intercommunication zeolite runner system recycles the district, the gas outlet intercommunication desorption fan in the cooling of zeolite runner system recycles the district, the desorption fan communicates to intake pipe department.
2. The energy efficient, low cost exhaust gas treatment system of claim 1, wherein a filter is installed between the concentration fan and the zeolite wheel system.
3. The energy-saving low-cost exhaust gas treatment system according to claim 2, wherein a fresh air inlet pipe is arranged between the concentration fan and the filter.
4. The energy efficient, low cost exhaust treatment system of claim 2, wherein an emergency bypass line is provided between the concentration fan and the filter, the emergency bypass line communicating to the flue.
5. The energy-saving and low-cost waste gas treatment system of claim 1, wherein a return air pipeline is further arranged at the rear end of the desorption fan, and the return air pipeline is communicated to the electric heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010089050.7A CN111298599A (en) | 2020-02-12 | 2020-02-12 | Energy-saving low-cost waste gas treatment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010089050.7A CN111298599A (en) | 2020-02-12 | 2020-02-12 | Energy-saving low-cost waste gas treatment system |
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| Publication Number | Publication Date |
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| CN111298599A true CN111298599A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010089050.7A Pending CN111298599A (en) | 2020-02-12 | 2020-02-12 | Energy-saving low-cost waste gas treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090107A (en) * | 2022-06-02 | 2022-09-23 | 青岛华世洁环保科技有限公司 | Zeolite runner adsorbs concentration and RCO coupling economizer system |
-
2020
- 2020-02-12 CN CN202010089050.7A patent/CN111298599A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115090107A (en) * | 2022-06-02 | 2022-09-23 | 青岛华世洁环保科技有限公司 | Zeolite runner adsorbs concentration and RCO coupling economizer system |
| CN115090107B (en) * | 2022-06-02 | 2024-02-06 | 青岛华世洁环保科技有限公司 | Zeolite rotating wheel adsorption concentration and RCO coupling energy-saving system |
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