CN101632892A - Treatment process for tail gas of calcining furnace - Google Patents
Treatment process for tail gas of calcining furnace Download PDFInfo
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- CN101632892A CN101632892A CN200810138576A CN200810138576A CN101632892A CN 101632892 A CN101632892 A CN 101632892A CN 200810138576 A CN200810138576 A CN 200810138576A CN 200810138576 A CN200810138576 A CN 200810138576A CN 101632892 A CN101632892 A CN 101632892A
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Abstract
The invention discloses a treatment process for tail gas of a calcining furnace, which belongs to the technical field of tail gas treatment. The process is characterized in that a condensing scrubbing tower which has a special structure and is integrated with furnace gas condensation and furnace gas scrubbing into a whole is adopted, a multi-point solution spraying device is arranged in the tower, a tower exit solution is pumped by a circulating pump and is cooled through a heat exchanger, then most of the tower exit solution is taken as a scrubbing cooling fluid, is returned to the scrubbing tower, and is used to scrub and cool furnace gas, and the rest is sent to a filtration post and is used as scrubbing water. The furnace gas after the temperature reduction and scrubbing is sucked away and emptied from the top of the scrubbing tower by a fan. In the novel flow, the prior four pumps are reduced to two pumps, the liquid level of the novel scrubbing tower and the temperature of the furnace gas are easy to control, and the whole flow is simple and small in area occupation. The whole production process has steady control, the scabbing phenomenon of the condensing tower is solved, and the production is stabilized.
Description
Technical field
The invention belongs to the vent gas treatment technical field, be specifically related to a kind of treatment process for tail gas of calcining furnace.
Background technology
Heavy alkali decomposes the furnace gas (CO that produces in calcining furnace
2, water vapour, NH
3Deng) go out the gas tank discharge from burner, enter in the lump in the wind separator with the gas of in premixed device, discharging, reclaim the ground caustic of carrying secretly in the furnace gas, the ground caustic that separates enters premixed device through light grey auger.Furnace gas enters the furnace gas condensing tower, makes the water vapour in the furnace gas be condensed into water by cooling water tank, and wherein most ammonia of dissolving and ground caustic, and the furnace gas that comes out from condensing tower enters scrubbing tower.With the ammonia in the soft water filtration washing furnace gas, the furnace gas after purifying is taken away emptying by the scrubbing tower top by blower fan.
Soft water is added in the scrubbing tower from cat head, takes away at the bottom of the tower after the washing liquid pump is played circulation, control certain concentration, delivers to when reaching technological requirement to filter the post and make wash water usefulness.Condensate liquid in the condensing tower is taken away at the bottom of tower through condensate pump, squeezes into the condensing tower top again and recycles, and delivers to the filtration post when its concentration reaches technological requirement and makes wash water usefulness.
This flow process is an alkali factory generalized flowsheet, and shortcoming is in actual production: shell and tube furnace gas condensing tower is easy to scab and blocking pipe on tubulation, causes furnace gas can't satisfy technological requirement, the scrubbing tower load strengthens, and band liquid is more serious, causes blower fan often to be with water, damage more seriously, maintenance is frequent.The liquid level control of solution tank is unstable, is easy to cause solution tank to emit groove, causes that water pollutes degradation manipulation environment.
Summary of the invention
At having environmental pollution problems in traditional calcining furnace vent gas treatment, the present invention is according to the principle and the characteristics of production technology, successfully perfect this flow process, solved the problem that former flow process exists, whole process of production control has steadily solved the condensing tower phenomenon that scabs, and has stablized production.
The present invention is concrete to adopt following technical scheme to realize:
With a special construction, the washing of collection furnace gas condensation and furnace gas is the condensation scrubbing tower of one, in tower, increase solution multiple spot spray equipment, going out tower solution is got by circulating pump, after the heat exchanger cooling, major part turns back to scrubbing tower as the washing cooling fluid, furnace gas is washed and lowers the temperature, and remainder is delivered to and is filtered the post and make wash water and use.Furnace gas after cooling and washing is taken away emptying by the scrubbing tower top by blower fan.In the new technological process, pump is reduced to 2 by original 4, and new scrubbing tower liquid level and furnace gas temperature are controlled easily, and the simple floor space of whole flow process is little.
Compared with prior art, the beneficial effect that the present invention had is: 1) solved the condensing tower phenomenon that scabs; 2) production is stable.
Description of drawings
Fig. 1 is the technological process of traditional calcining furnace vent gas treatment
Fig. 2 is the technological process of new calcining furnace vent gas treatment
The specific embodiment
Adopt a special construction, collection furnace gas condensation and furnace gas washing be the condensation scrubbing tower of one, in tower, increase solution multiple spot spray equipment, going out tower solution is got by circulating pump, after the heat exchanger cooling, major part turns back to scrubbing tower as the washing cooling fluid, furnace gas is washed and lowers the temperature, and remainder is delivered to and is filtered the post and make wash water and use.Furnace gas after cooling and washing is taken away emptying by the scrubbing tower top by blower fan.In the new technological process, pump is reduced to 2 by original 4, and new scrubbing tower liquid level and furnace gas temperature are controlled easily, and the simple floor space of whole flow process is little.
Claims (2)
1. treatment process for tail gas of calcining furnace, it is characterized in that, comprise and adopt furnace gas condensation of a collection and furnace gas washing to be the condensation scrubbing tower of one, in tower, increase solution multiple spot spray equipment, go out tower solution and get, after the heat exchanger cooling by circulating pump, major part turns back to scrubbing tower as the washing cooling fluid, furnace gas is washed and lowers the temperature, and remainder is delivered to and is filtered the post and make wash water usefulness, and the furnace gas after cooling and washing is taken away emptying by the scrubbing tower top by blower fan.
2. a kind of treatment process for tail gas of calcining furnace according to claim 1, its feature circulating pump is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810138576A CN101632892A (en) | 2008-07-25 | 2008-07-25 | Treatment process for tail gas of calcining furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810138576A CN101632892A (en) | 2008-07-25 | 2008-07-25 | Treatment process for tail gas of calcining furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101632892A true CN101632892A (en) | 2010-01-27 |
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ID=41592323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810138576A Pending CN101632892A (en) | 2008-07-25 | 2008-07-25 | Treatment process for tail gas of calcining furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101632892A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028069A (en) * | 2014-06-26 | 2014-09-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Smoke washing device and smoke washing method |
| CN106178897A (en) * | 2016-08-26 | 2016-12-07 | 浙江圣达生物药业股份有限公司 | Incinerator exhaust treatment system |
| CN108534389A (en) * | 2018-06-09 | 2018-09-14 | 连云港市擎天德邦科技发展有限公司 | Lithium bromide refrigerating heat sink and method in procedure of producing soda under joint alkaline process |
-
2008
- 2008-07-25 CN CN200810138576A patent/CN101632892A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104028069A (en) * | 2014-06-26 | 2014-09-10 | 攀钢集团攀枝花钢铁研究院有限公司 | Smoke washing device and smoke washing method |
| CN104028069B (en) * | 2014-06-26 | 2016-08-17 | 攀钢集团攀枝花钢铁研究院有限公司 | Flue washing device and method for washing flue gas |
| CN106178897A (en) * | 2016-08-26 | 2016-12-07 | 浙江圣达生物药业股份有限公司 | Incinerator exhaust treatment system |
| CN108534389A (en) * | 2018-06-09 | 2018-09-14 | 连云港市擎天德邦科技发展有限公司 | Lithium bromide refrigerating heat sink and method in procedure of producing soda under joint alkaline process |
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Open date: 20100127 |