CN207991293U - A kind of UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas - Google Patents
A kind of UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas Download PDFInfo
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- CN207991293U CN207991293U CN201820294780.9U CN201820294780U CN207991293U CN 207991293 U CN207991293 U CN 207991293U CN 201820294780 U CN201820294780 U CN 201820294780U CN 207991293 U CN207991293 U CN 207991293U
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- flue gas
- electrolysis
- electrolysis flue
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- heat
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Abstract
The utility model discloses a kind of UTILIZATION OF VESIDUAL HEAT IN of electrolysis flue gas and flue gas purification systems,Main pipe is conveyed including electrolysis flue gas,If dry flue gas input channel and several fume afterheats utilize and purification branch,Wherein,The outlet of each flue gas input channel is connected with electrolysis flue gas conveying main pipe,Each fume afterheat utilizes and purification branch includes coal-burning boiler,Heat recovery heat exchanger and smoke processing system,Wherein,The entrance that electrolysis flue gas conveying main pipe utilized and purified air preheater in coal-burning boiler back-end ductwork in branch with each fume afterheat is connected,The back-end ductwork outlet of coal-burning boiler is connected with the heat release side entrance of heat recovery heat exchanger,The heat release side outlet of heat recovery heat exchanger is connected with smoke processing system,The system can realize UTILIZATION OF VESIDUAL HEAT IN and the gas cleaning of electrolysis flue gas,And floor space,Initial investment and operating cost are low.
Description
Technical field
The utility model belongs to filed of flue gas purification in electrolysis industry, is related to a kind of UTILIZATION OF VESIDUAL HEAT IN and flue gas of electrolysis flue gas
Purification system.
Background technology
Since 2015, China promoted coal motor group minimum discharge to be transformed on a large scale.After transformation, the dioxy of coal-burning power plant
Change sulphur, nitrogen oxides and soot emissions limit value reduces by 83%, 50% and 67% than discharging standards respectively, reaches plant gas
Emission level.Currently, national 50% or more unit completes transformation, China has built up global maximum clean and effective coal electricity system.
While coal electricity industry pollutant continues emission reduction, the requirement of minimum discharge has also expanded to non-electrical industry from power industry；Currently,
Continue emission reduction compared to coal electricity industry pollutant, non-electrical industry is increasing to China's disposal of pollutants accounting, wherein sulfur dioxide,
Nitrogen oxides, smoke-dust discharge capacity account for the whole nation 3/4 or more.It in the recent period will modification steel, building materials, coloured, coalification, petrochemical industry, coking
Etc. industries pollutant emission standard, the revision of standard will accelerate the air environment protection treating of non-electrical industry.
According to the special emission limit of aluminum i ndustry pollutant emission standard (GB 25465-2010 modification single), specified in
The emission limit of electrolytic aluminium factory sulfur dioxide is 100mg/m3.《Aluminum i ndustry pollutant emission standard》(GB25465-2010) it changes
It is singly Chinese Ministry of Environmental Protection and publication on December 17th, 2013, is pair《Aluminum i ndustry pollutant emission standard》(GB25465-2010) benefit
It fills, increases the special emission limit of atmosphere pollution in a standard.Its purpose put into effect is wanted according to what national environmental protection worked
It asks, territorial development density is higher, environmental bearing capacity starts to weaken or atmospheric environment capacity is smaller, ecological environment frailty, holds
The easy area that serious atmospheric problem of environmental pollution occurs and needs to take special protection measure, should strictly control the pollutant of enterprise
Discharge behavior, the enterprise in above-mentioned area execute the special emission limit of atmosphere pollution of special provision.
Many enterprises of current electrolysis industry have completed or have implemented the transformation of environmental protection facility, new tighter to meet
The environmental protection standard requirement of lattice.Smoke Gas Purity by Electrolysis main path is newly-built purification processing facility, and electrolysis flue gas is directly set through environmental protection
It is discharged into air after setting purified treatment.The emission level of plant gas can also be reached in this way, but result in electrolysis flue gas environmental protection and set
Set the problems such as occupation of land scale is big, initial investment is big, operating cost is high.
Utility model content
The shortcomings that the purpose of the utility model is to overcome the above-mentioned prior arts provides a kind of waste heat profit of electrolysis flue gas
With and flue gas purification system, the system can realize UTILIZATION OF VESIDUAL HEAT IN and the gas cleaning of electrolysis flue gas, and floor space, initial stage
Investment and operating cost are low.
In order to achieve the above objectives, the UTILIZATION OF VESIDUAL HEAT IN of electrolysis flue gas described in the utility model and flue gas purification system include electricity
If solving flue gas conveying main pipe, dry flue gas input channel and several fume afterheats utilizes and purifies branch, wherein each flue gas input pipe
The outlet in road is connected with electrolysis flue gas conveying main pipe, and each fume afterheat utilizes and purification branch includes coal-burning boiler, waste heat
Recycle heat exchanger and smoke processing system, wherein electrolysis flue gas conveying main pipe, which is utilized and purified in branch with each fume afterheat, fires
The entrance of air preheater is connected in coal burning boiler back-end ductwork, the back-end ductwork outlet of coal-burning boiler and heat recovery heat exchanger
Heat release side entrance be connected, the heat release side outlet of heat recovery heat exchanger is connected with smoke processing system.
Electrolysis flue gas booster fan and electrolysis flue gas shut-off valve are both provided on each flue gas input channel.
Further include electrolysis flue gas auxiliary purification device, wherein the entrance of electrolysis flue gas auxiliary purification device is through electrolysis flue gas
Additional mechanical supercharging wind turbine and electrolysis flue gas auxiliary adjustment valve are connected with electrolysis flue gas conveying main pipe, electrolysis flue gas auxiliary purification device
Outlet and electrolysis flue gas auxiliary chimney be connected.
Fume afterheat utilizes and purification branch further includes boiler air-supply regulating valve, boiler fan, electrolysis flue gas First air
Regulating valve and boiler primary air fan, wherein boiler blow regulating valve one end and electrolysis flue gas First air regulating valve one end with
Electrolysis flue gas conveying main pipe is connected, and the other end of boiler air-supply regulating valve is connected with the entrance of boiler fan, is electrolysed cigarette
The other end of gas First air regulating valve is connected with the entrance of boiler primary air fan, the outlet of boiler primary air fan and boiler air-supply
The outlet of machine is connected with the entrance of air preheater in coal-burning boiler back-end ductwork.
The smoke processing system includes electric precipitator, desulfurizer and chimney, wherein the heat release of heat recovery heat exchanger
Side outlet is connected through electric precipitator and desulfurizer with the entrance of chimney successively.
The outlet of electric precipitator is connected through exhaust gas volumn controllable register and air-introduced machine with the entrance of desulfurizer.
The heat absorption side entrance of heat recovery heat exchanger is communicated with cooling water booster.
The utility model has the advantages that：
The UTILIZATION OF VESIDUAL HEAT IN of electrolysis flue gas described in the utility model and flue gas purification system are when specific operation, electrolysis flue gas
It is heated in the air preheater that electrolysis flue gas in conveying main pipe enters in coal-burning boiler back-end ductwork, is then used as and helps
Combustion air enters in coal-burning boiler, and the flue gas of coal-burning boiler output, which enters in heat recovery heat exchanger, carries out returning for waste heat
It receives, then carries out purified treatment through smoke processing system again, to realize UTILIZATION OF VESIDUAL HEAT IN and the gas cleaning of electrolysis flue gas, separately
Outside, it should be noted that the smoke processing system in the utility model is the smoke processing system that existing coal-burning boiler carries, because
This saves the up-front investment cost of electrolysis flue gas processing, and floor space is small, operating cost is low.In addition, due to temperature of electrolysis flue gas
Higher, electrolysis flue gas enters after air preheater the exhaust gas temperature that can increase air preheater, to by the heat of electrolysis flue gas
It can be transferred in the smoke evacuation of coal-burning boiler, the recycling of heat then be carried out through heat recovery heat exchanger again, to improve coal unit
The thermal efficiency, while saving the steam air heater for heating air.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Wherein, 1 be electrolysis flue gas booster fan, 2 be electrolysis flue gas shut-off valve, 3 be electrolysis flue gas conveying main pipe, 4 be electricity
Solution flue gas auxiliary adjustment valve, 5 be electrolysis flue gas additional mechanical supercharging wind turbine, 6 be electrolysis flue gas auxiliary purification device, 7 be electrolysis flue gas
Auxiliary chimney, 8 be boiler blow regulating valve, 9 be boiler fan, 10 be electrolysis flue gas First air regulating valve, 11 be boiler one
Secondary wind turbine, 12 be coal-burning boiler, 13 be air preheater, 14 be heat recovery heat exchanger, 15 be electric precipitator, 16 be exhaust gas volumn
Controllable register, 17 be air-introduced machine, 18 be desulfurizer, 19 be chimney, 20 be cooling water booster.
Specific implementation mode
The utility model is described in further detail below in conjunction with the accompanying drawings：
With reference to figure 1, the UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas described in the utility model include electrolysis flue gas
If conveying main pipe 3, dry flue gas input channel and several fume afterheats utilizes and purifies branch, wherein each flue gas input channel
Outlet is connected with electrolysis flue gas conveying main pipe 3, and each fume afterheat utilizes and purification branch is returned including coal-burning boiler 12, waste heat
Receive heat exchanger 14 and smoke processing system, wherein electrolysis flue gas, which conveys main pipe 3 and utilizes and purify in branch with each fume afterheat, fires
The entrance of air preheater 13 is connected in 12 back-end ductwork of coal burning boiler, the back-end ductwork outlet and waste heat recovery of coal-burning boiler 12
The heat release side entrance of heat exchanger 14 is connected, and the heat release side outlet of heat recovery heat exchanger 14 is connected with smoke processing system；
The heat absorption side entrance of heat recovery heat exchanger 14 is communicated with cooling water booster 20.In addition, being respectively provided on each flue gas input channel
There are electrolysis flue gas booster fan 1 and electrolysis flue gas shut-off valve 2.
The utility model further includes electrolysis flue gas auxiliary purification device 6, wherein electrolysis flue gas auxiliary purification device 6 enters
Mouth is connected through electrolysis flue gas additional mechanical supercharging wind turbine 5 and electrolysis flue gas auxiliary adjustment valve 4 with electrolysis flue gas conveying main pipe 3, is electrolysed
The outlet of flue gas auxiliary purification device 6 is connected with electrolysis flue gas auxiliary chimney 7.
Fume afterheat utilizes and purification branch further includes that boiler air-supply regulating valve 8, boiler fan 9, electrolysis flue gas are primary
Wind regulating valve 10 and boiler primary air fan 11, wherein one end of boiler air-supply regulating valve 8 and electrolysis flue gas First air regulating valve 10
One end and electrolysis flue gas conveying main pipe 3 be connected, boiler blow regulating valve 8 the other end and boiler fan 9 entrance phase
Connection, the other end of electrolysis flue gas First air regulating valve 10 are connected with the entrance of boiler primary air fan 11, boiler primary air fan
11 outlet and the outlet of boiler fan 9 are connected with the entrance of air preheater 13 in 12 back-end ductwork of coal-burning boiler.
The smoke processing system includes electric precipitator 15, desulfurizer 18 and chimney 19, wherein heat recovery heat exchanger
14 heat release side outlet is connected through electric precipitator 15 and desulfurizer 18 with the entrance of chimney 19 successively, wherein deduster 15
Outlet be connected with the entrance of desulfurizer 18 through exhaust gas volumn controllable register 16 and air-introduced machine 17.
The specific work process of the utility model is：
Electrolysis flue gas enters electrolysis flue gas through electrolysis flue gas booster fan 1 and electrolysis flue gas shut-off valve 2 and conveys main pipe 3
In, the electrolysis flue gas in electrolysis flue gas conveying main pipe 3 enters coal-burning boiler 12 through boiler primary air fan 11 and boiler fan 9
It is heated in air preheater 13 in back-end ductwork, the electrolysis flue gas after heating is entered in coal-burning boiler 12 and helped
Combustion, the flue gas that coal-burning boiler 12 exports is after the cooling of heat recovery heat exchanger 14,15 dedusting of electric precipitator, 18 desulfurization of desulfurizer
It is discharged from chimney 19.
In addition, when there are extra electrolysis flue gas or coal-burning boiler 12 to be deposited during maintenance in electrolysis flue gas conveying main pipe 3
In electrolysis flue gas, then electrolysis flue gas auxiliary adjustment valve 4 and electrolysis flue gas additional mechanical supercharging wind turbine 5 are opened, electrolysis flue gas is made to convey
It is auxiliary that electrolysis flue gas in main pipe 3 through electrolysis flue gas auxiliary adjustment valve 4 and electrolysis flue gas additional mechanical supercharging wind turbine 5 enters electrolysis flue gas
It helps in purifier 6, is then discharged again from electrolysis flue gas auxiliary chimney 7 after the purification of electrolysis flue gas auxiliary purification device 6.
O in electrolysis flue gas2For 20% or so, SO2For 300mg/m3Left and right, H2O content is 2% or so, HF is 3% or so,
Flue dust is 10mg/m3Left and right, remaining ingredient are N2And CO2, the temperature of flue gas is 90 DEG C or so, wherein O2Content is than in air
Content low about 1%, the higher electrolysis flue gas of temperature is sent into coal-burning boiler 12 and is used as combustion air by the utility model, to reach
Energy saving purpose, while using 18 increase-volume of desulfurizer of existing coal-burning boiler 12, not having to repeated construction desulfurizer 18, section
About equipment investment.
Claims (7)
1. the UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of a kind of electrolysis flue gas, which is characterized in that convey main pipe including electrolysis flue gas
(3) if, dry flue gas input channel and several fume afterheats utilize and purification branch, wherein the outlet of each flue gas input channel with
Electrolysis flue gas conveying main pipe (3) is connected, and each fume afterheat utilizes and purification branch includes coal-burning boiler (12), waste heat recovery
Heat exchanger (14) and smoke processing system, wherein electrolysis flue gas conveys main pipe (3) and utilizes and purified in branch with each fume afterheat
The entrance of air preheater (13) is connected in coal-burning boiler (12) back-end ductwork, the outlet of the back-end ductwork of coal-burning boiler (12) with
The heat release side entrance of heat recovery heat exchanger (14) is connected, the heat release side outlet and fume treatment of heat recovery heat exchanger (14)
System is connected.
2. the UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas according to claim 1, which is characterized in that each flue gas is defeated
Enter to be both provided with electrolysis flue gas booster fan (1) and electrolysis flue gas shut-off valve (2) on pipeline.
3. the UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas according to claim 1, which is characterized in that further include electricity
Solve flue gas auxiliary purification device (6), wherein the entrance of electrolysis flue gas auxiliary purification device (6) is through electrolysis flue gas additional mechanical supercharging wind
Machine (5) and electrolysis flue gas auxiliary adjustment valve (4) are connected with electrolysis flue gas conveying main pipe (3), electrolysis flue gas auxiliary purification device
(6) outlet is connected with electrolysis flue gas auxiliary chimney (7).
4. the UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas according to claim 1, which is characterized in that fume afterheat
Using and purification branch further include boiler air-supply regulating valve (8), boiler fan (9), electrolysis flue gas First air regulating valve (10)
And boiler primary air fan (11), wherein one end of boiler air-supply regulating valve (8) and the one of electrolysis flue gas First air regulating valve (10)
End is connected with electrolysis flue gas conveying main pipe (3), the entrance of the other end and boiler fan (9) of boiler air-supply regulating valve (8)
It is connected, the other end of electrolysis flue gas First air regulating valve (10) is connected with the entrance of boiler primary air fan (11), boiler one
The outlet of secondary wind turbine (11) and the outlet of boiler fan (9) with air preheater (13) in coal-burning boiler (12) back-end ductwork
Entrance be connected.
5. the UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas according to claim 1, which is characterized in that the flue gas
Processing system includes electric precipitator (15), desulfurizer (18) and chimney (19), wherein the heat release of heat recovery heat exchanger (14)
Side outlet is connected through electric precipitator (15) and desulfurizer (18) with the entrance of chimney (19) successively.
6. the UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas according to claim 5, which is characterized in that electric precipitator
(15) outlet is connected through exhaust gas volumn controllable register (16) and air-introduced machine (17) with the entrance of desulfurizer (18).
7. the UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas according to claim 1, which is characterized in that waste heat recovery
The heat absorption side entrance of heat exchanger (14) is communicated with cooling water booster (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820294780.9U CN207991293U (en) | 2018-03-02 | 2018-03-02 | A kind of UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820294780.9U CN207991293U (en) | 2018-03-02 | 2018-03-02 | A kind of UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of electrolysis flue gas |
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| CN207991293U true CN207991293U (en) | 2018-10-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225037A (en) * | 2018-03-02 | 2018-06-29 | 西安西热锅炉环保工程有限公司 | The UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of a kind of electrolysis flue gas |
| CN109612288A (en) * | 2019-01-25 | 2019-04-12 | 平湖旗滨玻璃有限公司 | The control method of smoke processing system and smoke processing system |
-
2018
- 2018-03-02 CN CN201820294780.9U patent/CN207991293U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108225037A (en) * | 2018-03-02 | 2018-06-29 | 西安西热锅炉环保工程有限公司 | The UTILIZATION OF VESIDUAL HEAT IN and flue gas purification system of a kind of electrolysis flue gas |
| CN108225037B (en) * | 2018-03-02 | 2023-11-10 | 西安西热锅炉环保工程有限公司 | Waste heat utilization and flue gas purification system of electrolysis flue gas |
| CN109612288A (en) * | 2019-01-25 | 2019-04-12 | 平湖旗滨玻璃有限公司 | The control method of smoke processing system and smoke processing system |
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