CN110385036A - A kind of organic waste gas treatment system of favorable anti-corrosion effect - Google Patents
A kind of organic waste gas treatment system of favorable anti-corrosion effect Download PDFInfo
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- CN110385036A CN110385036A CN201910530063.0A CN201910530063A CN110385036A CN 110385036 A CN110385036 A CN 110385036A CN 201910530063 A CN201910530063 A CN 201910530063A CN 110385036 A CN110385036 A CN 110385036A
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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
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
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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
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
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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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
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- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of organic waste gas treatment systems of favorable anti-corrosion effect, including oxidation furnace, the air inlet of oxidation furnace is connected with exhaust gas gas circuit, gas outlet is connected with clean gas gas circuit, preposition alkaline cleaner and water washing device are successively arranged along exhaust gas conveying direction in exhaust gas gas circuit, are successively arranged chilling apparatus, postposition alkaline cleaner and postposition blower along clean gas conveying direction in clean gas gas circuit.The invention has the benefit that removing original acidic materials in exhaust gas by preposition deacidifying device, to the probability that flow sheet equipment is corroded after reduction, the acidic materials for burning and generating are removed by postposition deacidifying device, to further decrease the probability that rear flow sheet equipment is corroded, cooperate the corrosion-inhibiting coating in oxidation furnace that can cause dew point corrosion when being precipitated to avoid acidic materials simultaneously, the load of flow sheet equipment after reduction guarantees system stable operation.
Description
Technical field
The invention belongs to industrial tail gas processing technology fields, and in particular to a kind of VOCs treatment system of favorable anti-corrosion effect
System.
Background technique
Many industrial production lines can all generate a large amount of organic exhaust gas, and according to the requirement of state's laws regulation, these are organic
Exhaust gas could discharge after having to pass through purified treatment.
Heating power oxidation technology is a kind of purification techniques common at present, for previous purification techniques, heating power oxidation
Technology has higher treatment effeciency.In the prior art, the general flow of heating power oxidation technology are as follows: production blower will be on production line
Organic exhaust gas be sent into heating power oxidation unit, organic exhaust gas sufficiently reacts in oxidation unit, and exchanges by sufficient heat
Later, chimney is drained into.
The process of heating power oxidation technology is that production blower send the exhaust gas on production line in existing industrial organic exhaust gas improvement
Enter heating power oxidation unit, exhaust gas sufficiently reacts in oxidation unit, and after the exchange of sufficient heat, is discharged into greatly through chimney
Gas.
For there are a variety of multiple of halogen (mainly halogenated hydrocarbons) and sulphur compound and nitrogenous compound (referring mainly to ammonia)
Miscellaneous ingredient gas inlet operating condition, existing process process generate deep-etching acid corrosion equipment after being difficult to avoid that halogenated hydrocarbons oxidation
The problem of, chemical reaction generation ammonium salt occurs in particular by the ammonia contained in conventional preheating method and air inlet and causes ammonium salt blockage
The problem of oxidation furnace (RTO) ceramic heat storage body.In order to solve the above problem present in system operation, need to existing
Processing system improves to eliminate drawbacks described above.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, a kind of VOCs treatment of favorable anti-corrosion effect is provided
System can substantially reduce sour gas to the corrosion probability of system equipment, and reduce the generation of ammonium salt to avoid pipeline, valve
The case where door, ceramic heat storage body etc. block.
To solve prior art problem, the invention discloses a kind of organic waste gas treatment systems of favorable anti-corrosion effect, including
Oxidation furnace, the air inlet of oxidation furnace is connected with exhaust gas gas circuit, gas outlet is connected with clean gas gas circuit, along exhaust gas conveying side in exhaust gas gas circuit
To preposition alkaline cleaner and water washing device is successively arranged, quenching is successively arranged along clean gas conveying direction in clean gas gas circuit and is filled
It sets, postposition alkaline cleaner and postposition blower.
Further, the by-pass port of oxidation furnace is connected with bypass gas circuit, and heat exchanger one is additionally provided in clean gas gas circuit and is taken off
Nitre device, denitrification apparatus are set to the rear of heat exchanger one；The refrigerant pipeline of heat exchanger one is set in clean gas gas circuit, it is hot
Matchmaker's pipeline is set between the clean gas gas circuit in front of bypass gas circuit and chilling apparatus.
Further, heat exchanger two is additionally provided in clean gas gas circuit, the refrigerant pipeline of heat exchanger two is set to heat exchange
In the clean gas gas circuit in one front of device, heating medium pipeline is set in the clean gas gas circuit at one rear of heat exchanger.
Further, the exhaust gas gas circuit between water washing device and oxidation furnace is also connected with dump gas circuit, dump gas
Dump valve and dump blower are equipped in road；The front of dump gas circuit and exhaust gas gas circuit connectivity part is equipped with flammable
Detector, rear are equipped with main valve；Main valve and vent valves can according to the detection data of combustible-gas detector into
Row linkage control.
Further, oxygen concentration detector is equipped in the exhaust gas gas circuit at water washing device rear, in front of preposition alkaline cleaner
Exhaust gas gas circuit is also connected with tonifying Qi gas circuit, is equipped with tonifying Qi blower and tonifying Qi valve in tonifying Qi gas circuit, tonifying Qi valve can be dense according to oxygen
The detection data for spending detector carries out linkage control.
Further, the back blow port of oxidation furnace is connected with blowback gas circuit, and blowback gas circuit is also connected to exhaust gas gas circuit, in blowback gas circuit
Equipped with back blowing machine.
Further, the lower box inner wall of oxidation furnace is equipped with corrosion-inhibiting coating.
Further, oxidation furnace is that there are three the heat accumulating type oxidation furnaces of burner hearth for tool.
The invention has the benefit that
1) favorable anti-corrosion effect: can only solve the problems, such as low concentration dew point corrosion using front end preheating method on the market at present, can not
It solves to corrode under high concentration high temperature.This exhaust treatment system uses the mode of corrosion-inhibiting coating (FRP, high anti-corrosion material etc.), can be with
Effectively solve the equipment etching problem in the case of low concentration and two kinds of high concentration.
2) by controlling 600 DEG C to 300 DEG C in heat storage of temperature fall time within 0.1s, make RTO(oxidation furnace) into
It is low to export the temperature difference, can guarantee that RTO lower box outlet temperature remains at low levels: on the one hand ensure that the safety of corrosion-inhibiting coating
Property, on the other hand avoid the formation of dioxin.
3) original acidic materials in exhaust gas are removed by preposition deacidifying device (washing and two link of alkali cleaning), to reduce
The probability that follow-up process equipment is corroded removes heating power oxygenolysis by postposition deacidifying device (quenching and two link of alkali cleaning) and produces
Raw acidic materials to further decrease the probability that follow-up process equipment is corroded, while cooperating the anti-corrosion in oxidation furnace to apply
Layer can cause acid dew piont corrosion when being precipitated to avoid acidic materials, reduce the load of follow-up process equipment, guarantee that system is stablized
Operation.
4) when the nitrogen oxides that the decomposition of nitrogenous compound heating power generates in exhaust gas is more, rear process heat-exchanger rig can be passed through
(two-stage heat exchanger) is preheated to reach the requirement of the inlet temperature of catalytic denitration, avoids dew point corrosion and ammonia is stifled, save
A large amount of energy consumptions；Then denitration process is carried out to meet flue gas emission requirement by SCR denitration device.
5) it is different from regular oxidation furnace and uses the back-flow scrubbing mode of clean tail gas, RTO is purged using external clean fresh air,
Hydrogen chloride (HCl) is reacted with ammonia in gas inlet in the clean gas that can effectively avoid that treated generates ammonium chloride (NH4Cl), makes
The problem of being blocked at RTO lower box crystallization deposition.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of a preferred embodiment of the invention.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
As shown in Figure 1, a kind of organic waste gas treatment system of favorable anti-corrosion effect, including oxidation furnace 1, the air inlet of oxidation furnace 1
Mouthful it is connected with exhaust gas gas circuit 100, to be connected with clean 200 oxidation furnace 1 of gas gas circuit be that there are three the oxidations of the heat accumulating type of regenerative chamber for tool for gas outlet
The air inlet of furnace, each regenerative chamber is connected by the exhaust gas branch of 100 end of exhaust gas gas circuit with exhaust gas gas circuit 100, and gas outlet is logical
The clean gas branch for crossing clean 200 head end of gas gas circuit is connected with clean gas gas circuit 200, and each exhaust gas branch road is equipped with an exhaust gas
Valve 19, each cleaning gas branch road are equipped with a clean air valve 18.The igniter of oxidation furnace 1 is connected with natural gas gas circuit and combustion
Gas gas circuit is burnt, natural gas valve 28 is equipped in natural gas gas circuit, is equipped with burning air valve 26 and combustion gas wind in combustion gas gas circuit
Machine 27.The burner hearth of oxidation furnace 1 is equipped with temperature detector 24, and temperature detector 24 is able to detect the indoor temperature of burning, and according to
The air inflow of the temperature adjustment natural gas and combustion gas that detect.Before being successively arranged in exhaust gas gas circuit 100 along exhaust gas conveying direction
It sets alkaline cleaner 2 and water washing device 3, is successively arranged chilling apparatus 4, postposition alkali cleaning along clean gas conveying direction in clean gas gas circuit
Device 5 and postposition blower 6.Preposition alkaline cleaner 2 is equipped with preposition NaOH pharmacy jar 13, and postposition alkaline cleaner 5 is equipped with postposition NaOH
Pharmacy jar 14.Exhaust gas first passes around preposition alkaline cleaner 2 and water washing device 3 removes acidic materials therein, subsequently into storage
The combustion chamber of hot type oxidation furnace carries out thermal decomposition oxidation and generates carbon dioxide, water, part nitrogen oxides and hydrogen chloride gas
Body, while subsidiary thermal energy discharge, the low-temperature flue gas being discharged from heat accumulating type oxidation furnace 1 enters flash cold column 4 and postposition alkaline cleaner 5 will
The removal of the acidic materials such as hydrogen chloride with flow sheet equipment after protection and meets flue gas emission requirement, is discharged into greatly finally by chimney 10
Gas.Preceding process does not use exhaust gas mixing preheating method, avoids the generation of ammonium salt, to reduce the blocked probability of pipeline, together
When avoid because ammonium salt generate cause fire risk.
Further, when there are when more nitrogen oxides, can not only being removed it by quenching and alkali cleaning in flue gas, because
This needs to introduce denitration process.The by-pass port of oxidation furnace 1 is connected with bypass gas circuit 300, is additionally provided with heat exchange in clean gas gas circuit 200
Device 1 and denitrification apparatus 25, denitrification apparatus 25 are set to the rear of heat exchanger 1；The refrigerant pipeline of heat exchanger 1 is set to clean
In net gas gas circuit 200, its heating medium pipeline is set between the clean gas gas circuit 200 in 2 front of bypass gas circuit 300 and chilling apparatus.It is logical
Over-heat-exchanger 1 fills smoke pre-heating subsequently into out of stock processing, the preferred SCR of denitrification apparatus 25 is carried out in denitrification apparatus 25
It sets.
Further, heat exchanger 27 is additionally provided in clean gas gas circuit 200, the refrigerant pipeline of heat exchanger 27 is set to heat
In the clean gas gas circuit 200 in one 8 front of exchanger, heating medium pipeline is set to the clean gas gas circuit 200 at one 8 rear of heat exchanger
In.Flue gas temperature still with higher after denitration process, therefore can be used to carry out the first step to the flue gas after alkali cleaning
Preheating, reaches higher temperature, and the set temperature for reaching catalytic denitration is then heated using heat exchanger 1.
Further, the exhaust gas gas circuit 100 between water washing device 3 and oxidation furnace 1 is also connected with dump gas circuit 500, tightly
Vent valves 21 and discharge blower 15 are equipped in anxious discharge gas circuit 500；Dump gas circuit 500 and 100 connectivity part of exhaust gas gas circuit
Front be equipped with combustible-gas detector 22, rear be equipped with main valve 20；Main valve 20 and vent valves 21 can be according to flammable
The detection data of detector 22 carries out linkage control.Similarly, oxygen is equipped in the exhaust gas gas circuit 100 at 3 rear of water washing device
The exhaust gas gas circuit 100 of concentration detector 23, preposition 2 front of alkaline cleaner is also connected with tonifying Qi gas circuit 600, sets in tonifying Qi gas circuit 600
There are tonifying Qi blower 12 and tonifying Qi valve 29, tonifying Qi valve 29 can be controlled according to the detection data of oxygen concentration detector 23.
After combustable gas concentration is more than setting value in exhaust gas gas circuit, fresh air can be supplemented by tonifying Qi gas circuit 600 to carry out exhaust gas
Dilution, while dump is carried out by dump gas circuit 500, it is ensured that pipeline and equipment are from harm.
Further, the back blow port of the regenerative chamber of oxidation furnace 1 is connected by blowback branch with blowback gas circuit 400, blowback branch
Road is equipped with blowback valve 17.Blowback gas circuit 400 is also connected to exhaust gas gas circuit 100 and is controlled by control valve 16, blowback
Back blowing machine 11 is equipped in gas circuit 400.Blowback gas circuit 400 can not only supplement air into exhaust gas gas circuit 100 and carry out system tune
Trial operation, and blowback can also be carried out using air, effectively avoid lower box from blocking and improve exhaust purification efficiency.
Further, the lower box inner wall of oxidation furnace 1 is equipped with corrosion-inhibiting coating.Sour gas is avoided to make when lower box is precipitated
At acid dew piont corrosion, while the load of equipment for after-treatment is reduced, guarantees system stable operation.Due to by anti-in being carried out to equipment
Corruption, without the heating by the exhaust gases to the front end RTO, so as to avoid the possibility of fire.And in the prior art, exhaust gas can pass through RTO heat
Bypass high-temp waste gas is heated to HCl dew point to avoid RTO post-etching lower box is entered, and the risk of this treatment process is band
Carry out fire hazard, there may be NH at mixing4Cl is generated, NH4Cl meets high-temperature gas may be on fire.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (8)
1. the air inlet of a kind of organic waste gas treatment system of favorable anti-corrosion effect, including oxidation furnace (1), the oxidation furnace (1) connects
There are exhaust gas gas circuit (100), gas outlet to be connected with clean gas gas circuit (200), it is characterised in that: along useless in the exhaust gas gas circuit (100)
Gas conveying direction is successively arranged preposition alkaline cleaner (2) and water washing device (3), along clean gas conveying side in the cleaning gas gas circuit
To being successively arranged chilling apparatus (4), postposition alkaline cleaner (5) and postposition blower (6).
2. a kind of organic waste gas treatment system of favorable anti-corrosion effect according to claim 1, it is characterised in that: the oxidation
The by-pass port of furnace (1) is connected with bypass gas circuit (300), be additionally provided in cleaning gas gas circuit (200) heat exchanger one (8) and
Denitrification apparatus (25), the denitrification apparatus (25) are set to the rear of the heat exchanger one (8)；The heat exchanger one (8)
Refrigerant pipeline is set in the clean gas gas circuit (200), its heating medium pipeline is set to the bypass gas circuit (300) and the quenching fills
It sets between the clean gas gas circuit (200) in front of (2).
3. a kind of organic waste gas treatment system of favorable anti-corrosion effect according to claim 2, it is characterised in that: the cleaning
Heat exchanger two (7) is additionally provided in gas gas circuit (200), the refrigerant pipeline of the heat exchanger two (7) is set to the heat exchanger
In clean gas gas circuit (200) in front of one (8), heating medium pipeline is set to the clean gas gas circuit at heat exchanger one (8) rear
(200) in.
4. a kind of organic waste gas treatment system of favorable anti-corrosion effect according to claim 1, it is characterised in that: the washing
Exhaust gas gas circuit (100) between device (3) and the oxidation furnace (1) is also connected with dump gas circuit (500), the dump
Vent valves (21) and discharge blower (15) are equipped in gas circuit (500)；The dump gas circuit (500) and the exhaust gas gas circuit
(100) front of connectivity part is equipped with combustible-gas detector (22), rear is equipped with main valve (20)；The main valve (20) and institute
Linkage control can be carried out according to the detection data of the combustible-gas detector (22) by stating vent valves (21).
5. a kind of organic waste gas treatment system of favorable anti-corrosion effect according to claim 1, it is characterised in that: the washing
Oxygen concentration detector (23) are equipped in the exhaust gas gas circuit (100) at device (3) rear, it is useless in front of the preposition alkaline cleaner (2)
Gas gas circuit (100) is also connected with tonifying Qi gas circuit (600), and tonifying Qi blower (12) and tonifying Qi valve are equipped in the tonifying Qi gas circuit (600)
(29), the tonifying Qi valve (29) can be controlled according to the detection data of the oxygen concentration detector (23).
6. a kind of organic waste gas treatment system of favorable anti-corrosion effect according to claim 1, it is characterised in that: the oxidation
The back blow port of furnace (1) is connected with blowback gas circuit (400), and the blowback gas circuit (400) is also connected to the exhaust gas gas circuit (100), described
Back blowing machine (11) are equipped in blowback gas circuit (400).
7. a kind of organic waste gas treatment system of favorable anti-corrosion effect according to any one of claims 1 to 6, it is characterised in that:
The lower box inner wall of the oxidation furnace (1) is equipped with corrosion-inhibiting coating.
8. a kind of organic waste gas treatment system of favorable anti-corrosion effect according to any one of claims 1 to 6, it is characterised in that:
The oxidation furnace (1) is that there are three the heat accumulating type oxidation furnaces of burner hearth for tool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910530063.0A CN110385036B (en) | 2019-06-19 | 2019-06-19 | Organic waste gas treatment system with good corrosion prevention effect |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910530063.0A CN110385036B (en) | 2019-06-19 | 2019-06-19 | Organic waste gas treatment system with good corrosion prevention effect |
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| JP2001293333A (en) * | 2000-04-17 | 2001-10-23 | Hideaki Miyata | Device and method for treating organic chlorinated compound |
| JP2002224532A (en) * | 2001-01-31 | 2002-08-13 | Babcock Hitachi Kk | Flue gas treatment method and system therefor |
| US20130095014A1 (en) * | 2011-10-18 | 2013-04-18 | Clean Energy Fuels Corporation | System for the treatment and purification of biogas |
| CN103697482A (en) * | 2013-12-09 | 2014-04-02 | 浙江环科环境研究院有限公司 | Treatment system and treatment process for organic waste gas boiler thermal incinerating |
| CN103962003A (en) * | 2013-01-25 | 2014-08-06 | 日立造船株式会社 | Method for removing ammonium salt of sulfuric acid of exhaust gas processing device, and exhaust gas processing device |
| CN206315663U (en) * | 2016-12-19 | 2017-07-11 | 苏州克兰茨环境科技有限公司 | A kind of acid waste gas processing unit |
| CN109442438A (en) * | 2018-10-24 | 2019-03-08 | 江苏大信环境科技有限公司 | The comprehensive processing technique and system of a kind of organic exhaust gas containing ammonia and the organic wastewater containing ammonia |
| CN109550348A (en) * | 2018-10-29 | 2019-04-02 | 中国石油天然气集团有限公司 | Viscous crude fireflood produces the processing method and processing device of fixed gas in gas |
-
2019
- 2019-06-19 CN CN201910530063.0A patent/CN110385036B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001293333A (en) * | 2000-04-17 | 2001-10-23 | Hideaki Miyata | Device and method for treating organic chlorinated compound |
| JP2002224532A (en) * | 2001-01-31 | 2002-08-13 | Babcock Hitachi Kk | Flue gas treatment method and system therefor |
| US20130095014A1 (en) * | 2011-10-18 | 2013-04-18 | Clean Energy Fuels Corporation | System for the treatment and purification of biogas |
| CN103962003A (en) * | 2013-01-25 | 2014-08-06 | 日立造船株式会社 | Method for removing ammonium salt of sulfuric acid of exhaust gas processing device, and exhaust gas processing device |
| CN103697482A (en) * | 2013-12-09 | 2014-04-02 | 浙江环科环境研究院有限公司 | Treatment system and treatment process for organic waste gas boiler thermal incinerating |
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| CN109550348A (en) * | 2018-10-29 | 2019-04-02 | 中国石油天然气集团有限公司 | Viscous crude fireflood produces the processing method and processing device of fixed gas in gas |
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| CN110385036B (en) | 2021-07-16 |
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