CN103953910B - A kind of ammoniacal liquor waste heat boiler and technique reclaiming flue gases of cock oven - Google Patents

A kind of ammoniacal liquor waste heat boiler and technique reclaiming flue gases of cock oven Download PDF

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Publication number
CN103953910B
CN103953910B CN201410211612.5A CN201410211612A CN103953910B CN 103953910 B CN103953910 B CN 103953910B CN 201410211612 A CN201410211612 A CN 201410211612A CN 103953910 B CN103953910 B CN 103953910B
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boiler
flue
boiler body
ammoniacal liquor
economizer
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CN103953910A (en
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张佳佳
盖东兴
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Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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Abstract

The present invention proposes a kind of the ammoniacal liquor waste heat boiler and the technique that reclaim flue gases of cock oven.A kind of ammoniacal liquor waste heat boiler and technique reclaiming flue gases of cock oven, comprise the power circulation system of ammonia water mixture, boiler body, chimney, boiler body is forced circulation vertical boiler, boiler body top arranges horizontal access flue, Horizontal Exit flue is set bottom boiler body, the external chimney of exhaust pass, the power circulation system of ammonia water mixture is divided into heat exchanging part and power section, heat exchanging part is arranged at boiler body inside, take ammoniacal liquor as working medium, in low-temperature flue gas field, the efficiency higher than conventional boiler can be reached.The present invention carries out heat recovery to flue gases of cock oven, economizes on resources, protection of the environment.

Description

A kind of ammoniacal liquor waste heat boiler and technique reclaiming flue gases of cock oven
Technical field
The invention belongs to the technical field recycling flue gases of cock oven, particularly relate to a kind of the ammoniacal liquor waste heat boiler and the technique that reclaim flue gases of cock oven.
Background technology
In the coke oven course of work, the coke-stove gas of heating, introduce by external pipe is built on stilts, coke-stove gas delivers to coke oven basement after preheating, converges burning by lower jet pipe bottom the flue of coal gas feeding combustion chamber with the air entered by waste gas exchange shutter.Waste gas after burning across aperture bottom flue enters the flue of down current, then through regenerator, by checker brick after the part Exposure degree of waste gas, enters air through bottom flue, waste gas exchange shutter, point flue, main chimney flue, chimney.Enter flue gases of cock oven temperature that chimney arranges at present outward greatly about 300 DEG C, smoke components is close with air, more weak to the corrosivity of waste heat boiler.But, the temperature of 300 DEG C is for the significant economic benefit of the more difficult acquisition of waste heat boiler of routine, at present, flue gases of cock oven is mainly directly entered in air and is gone, cause wasting of the energy, also pollute environment, therefore take measures that heat recovery is carried out to flue gases of cock oven significant with the promotion strategy of sustainable development to reduction energy consumption.
Take ammoniacal liquor as the solidifying boiling point do not fixed due to it by the heat transfer process of hot working fluid, in heat transfer process can preferably and residual heat resources match, and employing take ammoniacal liquor as the waste heat boiler of working medium, in low-temperature flue gas field, the efficiency higher than conventional boiler can be reached, therefore, may be used for reclaiming flue gases of cock oven, obtain good economic benefit in proper order.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned Problems existing, a kind of the ammoniacal liquor waste heat boiler and the technique that reclaim flue gases of cock oven are provided, this boiler take ammoniacal liquor as heat absorption working medium, flue gases of cock oven is thermal source, ammonia-water mixture produces certain density ammonia steam after absorption heat, is sent to acting generating in ammoniacal liquor turbine.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of ammoniacal liquor waste heat boiler reclaiming flue gases of cock oven, comprise the power circulation system of ammonia water mixture, boiler body, chimney, described boiler body is forced circulation vertical boiler, boiler body top arranges horizontal access flue, Horizontal Exit flue is set bottom boiler body, the external chimney of exhaust pass; The power circulation system of described ammonia water mixture is divided into heat exchanging part and power section, and two parts are connected by pipeline, and described heat exchanging part is arranged at boiler body inside.
By such scheme, described heat exchanging part comprises economizer, evaporimeter and superheater, and described superheater, evaporimeter are connected by pipeline in boiler body inside from top to bottom successively with economizer, and the import and export of superheater, evaporimeter and economizer are equipped with header; Described power section comprises fluid reservoir, feed pump and vapour liquid separator, and described economizer import to be exported with feed pump by feedwater piping and is connected, and feed pump import is connected with fluid reservoir; Ammonia water mixture is stored in described fluid reservoir; Described gas-liquid separator is connected with evaporator outlet header by pipeline, is connected bottom gas-liquid separator by pipeline with fluid reservoir top.
By such scheme, described economizer exit is connected with evaporator, and evaporator outlet is connected with vapour liquid separator import by the inlet pipeline being arranged at vapour liquid separator side, and the outlet conduit at vapour liquid separator top is connected with superheater import.
By such scheme, described economizer outer wall is furnished with fin.
A kind of technique reclaiming the ammoniacal liquor waste heat boiler of flue gases of cock oven, the horizontal access flue that flue gases of cock oven is arranged from described boiler body top enters boiler body, turn over 90 ° at gas approach exit flue gas to flow downward, first heat is passed to horizontal superheater by flue gas, then evaporimeter and economizer is flowed through successively, flue gas turns over 90 °, enters chimney in the horizontal direction, enter air from exhaust pass; Ammonia water mixture in fluid reservoir delivers in economizer through feed pump pressurization the heat absorbing flue gas, become saturated liquid, evaporimeter is delivered to after header mixing, become saturated vapor after being heated in evaporimeter, then deliver in gas-liquid separator the drop removing and be mingled with, through header, deliver to superheater, after overheated, deliver to subsequent processing in the superheater, the liquid separated in gas-liquid separator is delivered in fluid reservoir, again participates in circulation.
The invention has the beneficial effects as follows: 1, a kind of ammoniacal liquor waste heat boiler reclaiming flue gases of cock oven is provided, recycle flue gases of cock oven, economize on resources, protection of the environment; 2, economizer outer wall is furnished with fin, with enhanced heat exchange, reduces boiler size; 3, take ammoniacal liquor as working medium, in low-temperature flue gas field, the efficiency higher than conventional boiler can be reached.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Wherein: 1. economizer, 2. evaporimeter, 3. superheater, 4. superheater outlet pipeline, 5. vapour liquid separator, 6. vapour liquid separator inlet pipeline, 7. vapour liquid separator outlet conduit, 8. fluid reservoir, 9. feed pump, 10. feedwater piping, 11. headers, 12. boiler inlet flues, 13. boiler export flues, 14. boiler bodies.
Detailed description of the invention
For understanding the present invention better, below in conjunction with drawings and Examples, the invention will be further described.
As shown in Figure 1, a kind of ammoniacal liquor waste heat boiler and technique reclaiming flue gases of cock oven, comprise fluid reservoir 8, feed pump 9, economizer 1, evaporimeter 2, superheater 3, boiler body 14, boiler body is vertical boiler, boiler body top arranges horizontal access flue 12, Horizontal Exit flue 13 is set bottom boiler body, the external chimney of exhaust pass, boiler body inside sets gradually superheater from top to bottom, evaporimeter, economizer, economizer exit is connected with evaporator, evaporator outlet is connected with vapour liquid separator 5 import by the inlet pipeline being arranged at vapour liquid separator side, the outlet conduit at vapour liquid separator top is connected with superheater import, import and export are equipped with header 11, to ensure to be heated evenly in pipe, economizer import is exported with feed pump by feedwater piping 10 and is connected, feed pump import is connected with fluid reservoir, economizer outer wall is furnished with fin, with enhanced heat exchange, reduce boiler size, overheated ammonia vapor is delivered to subsequent processing by header by superheater outlet, gas-liquid separator is connected with evaporator outlet header by pipeline, be connected with fluid reservoir top by pipeline bottom gas-liquid separator, ammonia water mixture is stored in fluid reservoir, take ammoniacal liquor as working medium, in low-temperature flue gas field, the efficiency higher than conventional boiler can be reached.
During the work of ammoniacal liquor waste heat boiler, from technological process flue gases of cock oven out, exhaust gases passes through outside flue and liner brick wall enters boiler inlet flue 12 from boiler upper end level, turn over 90 ° at boiler inlet flue exit flue gas to flow downward, first heat is passed to horizontal superheater 3 by flue gas, then flows through evaporimeter 2, economizer 1 successively, temperature is down to about 130 DEG C, flue gas turns over 90 °, enters chimney in the horizontal direction, enter air from exhaust pass 13.
Liquid ammoniacal liquor from fluid reservoir 8 delivers to through feed pump 9 pressurization the heat absorbing flue gas in economizer 1, become saturated liquid, evaporimeter 2 is delivered to after header 11 mixes, saturated vapor is become after being heated in evaporimeter, deliver in gas-liquid separator 5, remove the drop be mingled with in the separator, through header, deliver to superheater 3, after overheated, deliver to subsequent processing in the superheater.The liquid separated in gas-liquid separator is delivered in fluid reservoir, again participates in circulation.

Claims (4)

1. one kind is reclaimed the ammoniacal liquor waste heat boiler of flue gases of cock oven, it is characterized in that, comprise the power circulation system of ammonia water mixture, boiler body, chimney, described boiler body is forced circulation vertical boiler, boiler body top arranges horizontal access flue, Horizontal Exit flue is set bottom boiler body, the external chimney of exhaust pass; The power circulation system of described ammonia water mixture is divided into heat exchanging part and power section, two parts are connected by pipeline, described heat exchanging part is arranged at boiler body inside, described heat exchanging part comprises economizer, evaporimeter and superheater, described superheater, evaporimeter are connected by pipeline in boiler body inside from top to bottom successively with economizer, and the import and export of superheater, evaporimeter and economizer are equipped with header; Described power section comprises fluid reservoir, feed pump and vapour liquid separator, and described economizer import to be exported with feed pump by feedwater piping and is connected, and feed pump import is connected with fluid reservoir; Ammonia water mixture is stored in described fluid reservoir; Described gas-liquid separator is connected with evaporator outlet header by pipeline, is connected bottom vapour liquid separator by pipeline with fluid reservoir top.
2. a kind of ammoniacal liquor waste heat boiler reclaiming flue gases of cock oven according to claim 1, it is characterized in that, described economizer exit is connected with evaporator, evaporator outlet is connected with vapour liquid separator import by the inlet pipeline being arranged at vapour liquid separator side, and the outlet conduit at vapour liquid separator top is connected with superheater import.
3. a kind of ammoniacal liquor waste heat boiler reclaiming flue gases of cock oven according to claim 2, is characterized in that, described economizer outer wall is furnished with fin.
4. adopt a kind of technique reclaiming the ammoniacal liquor waste heat boiler of flue gases of cock oven described in the claims 2, it is characterized in that: the horizontal access flue that flue gases of cock oven is arranged from described boiler body top enters boiler body, turn over 90 ° at gas approach exit flue gas to flow downward, first heat is passed to horizontal superheater by flue gas, then evaporimeter and economizer is flowed through successively, flue gas turns over 90 °, enters chimney in the horizontal direction, enter air from exhaust pass; Ammonia water mixture in fluid reservoir delivers in economizer through feed pump pressurization the heat absorbing flue gas, become saturated liquid, evaporimeter is delivered to after header mixing, become saturated vapor after being heated in evaporimeter, then deliver in gas-liquid separator the drop removing and be mingled with, through header, deliver to superheater, after overheated, deliver to subsequent processing in the superheater, the liquid separated in gas-liquid separator is delivered in fluid reservoir, again participates in circulation.
CN201410211612.5A 2014-05-16 2014-05-16 A kind of ammoniacal liquor waste heat boiler and technique reclaiming flue gases of cock oven Active CN103953910B (en)

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* Cited by examiner, † Cited by third party
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CN104548930A (en) * 2014-12-29 2015-04-29 大连贝斯特环境工程设备有限公司 Selective catalytic reduction (SCR) denitration method and device for ammonia water

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4875436A (en) * 1988-02-09 1989-10-24 W. R. Grace & Co.-Conn. Waste heat recovery system
CN201772424U (en) * 2009-12-21 2011-03-23 中国船舶重工集团公司第七�三研究所 Coke oven gas primary-cooling waste-heat boiler
CN102287800A (en) * 2011-06-10 2011-12-21 邢同春 System for producing steam by utilizing coke oven to heat waste gas and waste heat
CN202220628U (en) * 2011-09-13 2012-05-16 上海盛合新能源科技有限公司 Combined cycle power generation system for increasing use efficiency of heat source
CN203927866U (en) * 2014-05-16 2014-11-05 中冶南方工程技术有限公司 A kind of ammoniacal liquor waste heat boiler that reclaims flue gases of cock oven

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4875436A (en) * 1988-02-09 1989-10-24 W. R. Grace & Co.-Conn. Waste heat recovery system
CN201772424U (en) * 2009-12-21 2011-03-23 中国船舶重工集团公司第七�三研究所 Coke oven gas primary-cooling waste-heat boiler
CN102287800A (en) * 2011-06-10 2011-12-21 邢同春 System for producing steam by utilizing coke oven to heat waste gas and waste heat
CN202220628U (en) * 2011-09-13 2012-05-16 上海盛合新能源科技有限公司 Combined cycle power generation system for increasing use efficiency of heat source
CN203927866U (en) * 2014-05-16 2014-11-05 中冶南方工程技术有限公司 A kind of ammoniacal liquor waste heat boiler that reclaims flue gases of cock oven

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