CN114294661A - Incineration treatment system and treatment method for chlorine-containing waste gas - Google Patents
Incineration treatment system and treatment method for chlorine-containing waste gas Download PDFInfo
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- CN114294661A CN114294661A CN202210121898.2A CN202210121898A CN114294661A CN 114294661 A CN114294661 A CN 114294661A CN 202210121898 A CN202210121898 A CN 202210121898A CN 114294661 A CN114294661 A CN 114294661A
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Abstract
The invention discloses a chlorine-containing waste gas incineration treatment system and a treatment method, wherein the system comprises: an alkali washing device, a water washing device and a demisting device which are connected in sequence for pretreating chlorine-containing waste gas; the heat accumulation incinerator is provided with a combustion chamber and a plurality of heat accumulation chambers working alternately, and the air inlet of each heat accumulation chamber is communicated with the outlet of the demisting device through a corresponding air inlet valve; tortoise-shell nets are arranged on the inner surfaces of the regenerative chambers and the combustion chambers, which are in contact with the chlorine-containing waste gas, and the tortoise-shell nets are filled with anticorrosive castable; the gas outlet of each heat storage chamber is communicated with the quenching device through respective gas outlet valves; gas discharged from an air outlet of the quenching device sequentially passes through another alkali washing device and the activated carbon adsorption device and finally enters the discharge device. The system adopts the combination of alkali washing, water washing and single demisting to effectively reduce the concentration and the water content of the acid gas in the waste gas, thereby reducing the dew point corrosion of the waste gas; the heat-storage incinerator is provided with the tortoise shell net and the anticorrosive castable, so that corrosion can be effectively prevented.
Description
Technical Field
The invention relates to the field of environment-friendly equipment, in particular to a chlorine-containing waste gas incineration treatment system and a treatment method.
Background
The common technologies for treating the chlorine-containing waste gas include washing, activated carbon/carbon fiber adsorption and desorption, resin adsorption and desorption, catalytic combustion, regenerative combustion and the like, and the incineration method is generally adopted due to the fact that the components of the chlorine-containing waste gas are relatively complex and have lower recycling value. The existing treatment process for burning chlorine-containing waste gas has the following problems: the equipment is easy to corrode, and secondary pollutants such as hydrogen chloride, dioxin and the like can be generated. The main reason that the equipment in the prior art is easy to corrode is that the interaction between the hydrogen chloride generated by burning the chlorine-containing waste gas and the residual moisture in the waste gas has strong corrosivity, so that the inner wall of the regenerative thermal oxidizer is corroded.
In part of the prior art, on the basis of direct incineration, chlorine-containing waste gas is subjected to alkaline washing before and after incineration respectively to remove acid gas, however, the method cannot solve the problems that the regenerative incinerator is easy to corrode and secondary pollutants are not completely removed.
Disclosure of Invention
In view of the above-mentioned defects of the prior art, the present invention provides a system and a method for incinerating waste gas containing chlorine, so as to achieve the purposes of improving the treatment efficiency of waste gas, prolonging the service life of incineration equipment and reducing the operation cost.
In order to achieve the above object, the present invention provides a system for incinerating chlorine-containing waste gas, comprising:
an alkali washing device, a water washing device and a demisting device which are connected in sequence for pretreating chlorine-containing waste gas;
the regenerative incinerator is provided with a combustion chamber and a plurality of regenerative chambers which work alternately, and an air inlet of each regenerative chamber is communicated with an outlet of the demisting device through a corresponding air inlet valve; tortoise-shell nets are arranged on the inner surfaces of the regenerative chambers and the combustion chambers, which are in contact with the chlorine-containing waste gas, and the tortoise-shell nets are filled with anticorrosive castable;
the gas outlet of each heat storage chamber is communicated with a quenching device through a respective gas outlet valve; and gas discharged from an air outlet of the quenching device sequentially passes through another alkali washing device and the activated carbon adsorption device and finally enters the discharge device.
The invention is further improved in that: each regenerator also has a purge inlet, each purge inlet communicating with a purge fan through a respective purge valve.
The invention is further improved in that: the number of the regenerative chambers is greater than or equal to three.
The invention is further improved in that: and the outlet of the demisting device is communicated with each air inlet valve through an RTO fan and a stop valve.
The invention is further improved in that: the discharging device comprises a chimney and is communicated with the outlet of the activated carbon adsorption device through an RTO fan.
The invention also provides a chlorine-containing waste gas incineration treatment method implemented by adopting the chlorine-containing waste gas incineration treatment system, which comprises the following steps:
respectively washing acidic and water-soluble gases in the waste gas by using an alkaline washing device, a water washing device and a demisting device in sequence, and removing water mist;
burning the demisted waste gas by a heat storage incinerator;
and treating the waste gas after incineration by adopting a quenching device, an alkali washing device and an activated carbon adsorption device.
The device and the method provided by the invention have the following technical effects:
(1) the combination of alkali washing, water washing and single demisting is adopted, so that the concentration and the water content of the acidic gas in the waste gas can be effectively reduced, and the dew point corrosion of the waste gas is reduced;
(2) the RTO equipment can effectively prolong the service life of the RTO equipment and improve the waste gas treatment efficiency by adopting a special anticorrosive coating plus a tortoise shell net plus an anticorrosive castable.
(3) By adopting the modes of quenching, alkali washing, demisting and active carbon, the concentration of secondary pollutants such as HCL, dioxin and the like in the RTO tail gas can be reduced, and the subsequent treatment equipment is protected.
Drawings
FIG. 1 is a schematic diagram of a chlorine-containing waste gas incineration disposal system.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.
Some exemplary embodiments of the invention have been described for illustrative purposes, and it is to be understood that the invention may be practiced otherwise than as specifically described.
As shown in fig. 1, an embodiment of the present invention includes a chlorine-containing waste gas incineration processing system including:
an alkali washing device, a water washing device and a demisting device which are connected in sequence for pretreating chlorine-containing waste gas;
the heat accumulation incinerator is provided with a combustion chamber and three heat accumulation chambers which work alternately, and the air inlet of each heat accumulation chamber is communicated with the outlet of the demisting device through a corresponding air inlet valve; tortoise-shell nets are arranged on the inner surfaces of the regenerative chambers and the combustion chambers, which are in contact with the chlorine-containing waste gas, and the tortoise-shell nets are filled with anticorrosive castable; each regenerator also has a purge inlet, each purge inlet communicating with a purge fan through a respective purge valve.
The gas outlet of each heat storage chamber is communicated with a quenching device through a respective gas outlet valve; and gas discharged from an air outlet of the quenching device sequentially passes through another alkali washing device and the activated carbon adsorption device and finally enters the discharge device.
In some specific embodiments, the anticorrosive castable material adopts quartz, cast stone and acid-resistant cement as raw materials, the bonding agent is water glass, the curing agent is sodium fluosilicate, the workability and the strength are improved by adding active silica fume, the water absorption is improved by adding an inorganic acidic anti-permeability waterproof agent, and the castable material is cured at normal temperature.
In some embodiments, the outlet of the demister is in communication with each inlet valve via an RTO blower and shut-off valves. The discharging device comprises a chimney and is communicated with the outlet of the activated carbon adsorption device through an RTO fan.
The embodiment of the invention also comprises a chlorine-containing waste gas incineration treatment method implemented by adopting the chlorine-containing waste gas incineration treatment system, which comprises the following steps:
and (3) sequentially treating the chlorine-containing waste gas by adopting an alkaline washing device, a water washing device and a demisting device. The purpose of carrying out primary treatment on the acidic waste gas and the water-soluble waste gas by adopting the pretreatment system of alkaline washing and water washing is to reduce the concentration of the acidic gas and the water-soluble gas which enter an RTO (regenerative thermal oxidizer) system in a balanced manner, and the waste gas after alkaline washing and water washing enters an independent demister to be demisted, is dehumidified to reduce the water content in the system and then enters a subsequent RTO treatment system.
And burning the demisted waste gas by a heat storage incinerator. The pretreated chlorine-containing waste gas enters into the RTO, and the direct contact parts of the lower box body and the like of the RTO and the waste gas all adopt special anti-corrosion design, namely an anti-corrosion castable coating is adopted. The waste gas enters the incineration chamber after being heated by the regenerator, and the waste gas is heated to the oxidation temperature of 820 ℃ by self-decomposition, heat release and oxidation or heating by a burner in the incineration chamber, so that the VOC component in the waste gas is decomposed into carbon dioxide and water. Since the exhaust gas is preheated in the heat storage chamber, the fuel consumption is greatly reduced. The waste gas is burned in the oxidation chamber, and is changed into purified high-temperature gas, then the purified high-temperature gas leaves the oxidation chamber, enters a heat storage chamber (cooled in the previous cycle), is discharged after releasing heat and reducing temperature, and is heated after absorbing a large amount of heat (used for heating the waste gas in the next cycle).
And treating the waste gas after incineration by adopting a quenching device, an alkali washing device and an activated carbon adsorption device. After the chlorine-containing waste gas is incinerated by RTO, a large amount of secondary pollutants such as HCL, phosgene, dioxin and the like can be generated, the subsequent treatment system is provided with quenching, alkali washing, demisting and active carbon, and the RTO combustion tail gas is discharged after the secondary pollutants are removed by cooling, demisting and subsequent treatment device.
The invention treats the chlorine-containing waste gas by adopting the processes of alkali washing, water washing, demisting, RTO (regenerative combustion), quenching, alkali washing, demisting and active carbon, and can improve the waste gas treatment efficiency, prolong the service life of incineration equipment and reduce the operation and maintenance difficulty.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. A chlorine-containing waste gas incineration treatment system is characterized by comprising:
an alkali washing device, a water washing device and a demisting device which are connected in sequence for pretreating chlorine-containing waste gas;
the regenerative incinerator is provided with a combustion chamber and a plurality of regenerative chambers which work alternately, and an air inlet of each regenerative chamber is communicated with an outlet of the demisting device through a corresponding air inlet valve; tortoise-shell nets are arranged on the inner surfaces of the regenerative chambers and the combustion chambers, which are in contact with the chlorine-containing waste gas, and the tortoise-shell nets are filled with anticorrosive castable;
the gas outlet of each heat storage chamber is communicated with a quenching device through a respective gas outlet valve; and gas discharged from an air outlet of the quenching device sequentially passes through another alkali washing device and the activated carbon adsorption device and finally enters the discharge device.
2. The incineration disposal system for chlorine-containing waste gas according to claim 1, wherein: each regenerator also has a purge inlet, each purge inlet communicating with a purge fan through a respective purge valve.
3. The incineration disposal system for chlorine-containing waste gas according to claim 1, wherein: the number of the regenerative chambers is greater than or equal to three.
4. The incineration disposal system for chlorine-containing waste gas according to claim 1, wherein: and the outlet of the demisting device is communicated with each air inlet valve through an RTO fan and a stop valve.
5. The incineration disposal system for chlorine-containing waste gas according to claim 1, wherein: the discharging device comprises a chimney and is communicated with the outlet of the activated carbon adsorption device through an RTO fan.
6. A method for incineration disposal of chlorine-containing waste gas, which is performed by using the system for incineration disposal of chlorine-containing waste gas according to any one of claims 1 to 5, comprising:
respectively washing acidic and water-soluble gases in the waste gas by using an alkaline washing device, a water washing device and a demisting device in sequence, and removing water mist;
burning the demisted waste gas by a heat storage incinerator;
and treating the waste gas after incineration by adopting a quenching device, an alkali washing device and an activated carbon adsorption device.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210121898.2A CN114294661A (en) | 2022-02-09 | 2022-02-09 | Incineration treatment system and treatment method for chlorine-containing waste gas |
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| CN202210121898.2A CN114294661A (en) | 2022-02-09 | 2022-02-09 | Incineration treatment system and treatment method for chlorine-containing waste gas |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115888305A (en) * | 2022-11-14 | 2023-04-04 | 江苏嘉盛环境设备制造有限公司 | Vacuum pump tail gas treatment System (VOCs) process for lithium battery industry |
| CN117491425A (en) * | 2024-01-03 | 2024-02-02 | 东方华瑞(成都)科技开发有限责任公司 | Detection device for flue gas acid dew point |
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2022
- 2022-02-09 CN CN202210121898.2A patent/CN114294661A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115888305A (en) * | 2022-11-14 | 2023-04-04 | 江苏嘉盛环境设备制造有限公司 | Vacuum pump tail gas treatment System (VOCs) process for lithium battery industry |
| CN117491425A (en) * | 2024-01-03 | 2024-02-02 | 东方华瑞(成都)科技开发有限责任公司 | Detection device for flue gas acid dew point |
| CN117491425B (en) * | 2024-01-03 | 2024-03-08 | 东方华瑞(成都)科技开发有限责任公司 | Detection device for flue gas acid dew point |
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