CN103925589A - Boiler energy saving and heat exchanging technology implemented by aid of efficient separation method - Google Patents

Boiler energy saving and heat exchanging technology implemented by aid of efficient separation method Download PDF

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Publication number
CN103925589A
CN103925589A CN201310436673.7A CN201310436673A CN103925589A CN 103925589 A CN103925589 A CN 103925589A CN 201310436673 A CN201310436673 A CN 201310436673A CN 103925589 A CN103925589 A CN 103925589A
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CN
China
Prior art keywords
flue gas
heat
water
heat exchanging
boiler
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Pending
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CN201310436673.7A
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Chinese (zh)
Inventor
李永华
刘影
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李永华
刘影
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Application filed by 李永华, 刘影 filed Critical 李永华
Priority to CN201310436673.7A priority Critical patent/CN103925589A/en
Publication of CN103925589A publication Critical patent/CN103925589A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a boiler energy saving and heat exchanging technology implemented by the aid of an efficient flue gas separation method. The boiler energy saving and heat exchanging technology has the advantages that a heat exchanging process is implemented for tail flues of boilers which utilize raw coal, biomass and natural gas as fuel, so that the flue gas temperatures of the boilers range from 30 DEG C to 50 DEG C under the control according to computed acid dew points and water dew points of flue gas, exhaust heat of the tail flue gas of the boilers can be recycled, and effects of saving energy, reducing consumption, improving environments and comprehensively utilizing resources can be realized.

Description

A kind of boiler energy-saving heat transfer technology that utilizes efficient separation method
Technical field:
The technology of the present invention can be used in take in the boiler back end ductwork that raw coal, living beings, natural gas be fuel, and the heat of recovery boiler tail flue gas discharge reaches energy-saving and cost-reducing, improves environment, the effect of comprehensive utilization.
Background technology:
Realize " 12 " target for energy-saving and emission-reduction task, the situation is tense in current energy-saving and emission-reduction, and the industry of high energy consumption, high pollution increases to be accelerated, and energy consumption intensity decrease speed slows down, and pollutant emission incremental pressure strengthens.For strengthening target for energy-saving and emission-reduction responsibility, adjust and optimize the structure of production, Developing Circulation Economy, accelerates efficient boiler and boiler residual heat utilization technology and product development and promotes.At present domestic electricity generation boiler efficiency is between 85-90%, and the arcola thermal efficiency is only between 65-75%, and efficiency of energy utilization is lower, the energy saving space is larger, recycles and discharges the heat that flue gas is taken away, and can reduce boiler energy consumption, improve system effectiveness, realize comprehensive utilization of resources.
Summary of the invention:
Content of the present invention is by the recovery to boiler tail flue gas discharges heat, utilizes heat transfer technology, by heat heating demineralized water or the running water of off-gas recovery, can improve thermodynamic system efficiency or offer industrial and commercial enterprises and resident's use.
Accompanying drawing explanation:
Accompanying drawing is the technology of the present invention process chart.
The specific embodiment:
In boiler back end ductwork, flue gas after deduster is purified is cooling through efficient centrifugal spraying in knockout tower, a part of heat in flue gas cooling water of being sprayed is taken away, reduce kind of dust simultaneously, by the cooling water after flue gas, entered in separate tank and carry out secondary precipitation separation, after being dried with ash pump discharge after a small amount of trickle dust precipitation, fully utilize; The low-temperature flue gas that another part purity is higher enters atmosphere through air-introduced machine, improves atmospheric environment.Hot water in separate tank temperature after surface-type heat exchanger heat exchange reduces, and continues to enter in knockout tower to recycle as cooling water.From knockout tower outlet, by the cooling water of flue gas, through surface exchanger, be used for heating demineralized water or running water, carry out heat recovery and utilization.Utilize this heat recovery technology, can make boiler tail flue gas temperature reduce 30-50 ℃, energy-saving effect is very remarkable.

Claims (2)

1. by the recovery to boiler tail flue gas discharges heat, utilize heat transfer technology, by heat heating demineralized water or the running water of off-gas recovery, can improve thermodynamic system efficiency or offer industrial and commercial enterprises and resident's use.
2. in boiler back end ductwork, flue gas after deduster is purified is cooling through efficient centrifugal spraying in knockout tower, a part of heat in flue gas cooling water of being sprayed is taken away, reduce kind of dust simultaneously, by the cooling water after flue gas, entered in separate tank and carry out secondary precipitation separation, after being dried with ash pump discharge after a small amount of trickle dust precipitation, fully utilize; The low-temperature flue gas that another part purity is higher enters atmosphere through air-introduced machine, improves atmospheric environment.Hot water in separate tank temperature after surface-type heat exchanger heat exchange reduces, and continues to enter in knockout tower to recycle as cooling water.From knockout tower outlet, by the cooling water of flue gas, through surface exchanger, be used for heating demineralized water or running water, carry out heat recovery and utilization.Utilize this heat recovery technology, can make boiler tail flue gas temperature reduce 30-50 ℃, energy-saving effect is very remarkable.
CN201310436673.7A 2013-09-14 2013-09-14 Boiler energy saving and heat exchanging technology implemented by aid of efficient separation method Pending CN103925589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310436673.7A CN103925589A (en) 2013-09-14 2013-09-14 Boiler energy saving and heat exchanging technology implemented by aid of efficient separation method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310436673.7A CN103925589A (en) 2013-09-14 2013-09-14 Boiler energy saving and heat exchanging technology implemented by aid of efficient separation method

Publications (1)

Publication Number Publication Date
CN103925589A true CN103925589A (en) 2014-07-16

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CN201310436673.7A Pending CN103925589A (en) 2013-09-14 2013-09-14 Boiler energy saving and heat exchanging technology implemented by aid of efficient separation method

Country Status (1)

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CN (1) CN103925589A (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11264505A (en) * 1998-03-17 1999-09-28 Nippon Shisetsu Hozen Kk Heat-up system of boiler
CN1736560A (en) * 2004-08-17 2006-02-22 王惠生 Method for comprehensively controlling and utilizing waste water, waste gas and residue heat
CN101108303A (en) * 2007-08-02 2008-01-23 武汉凯迪电力环保有限公司 Wet-type ammonia process flue gas purifying technique for jointly removing multipollutant and system thereof
CN201606865U (en) * 2010-01-22 2010-10-13 西安热工研究院有限公司 Hydrophily type boiler smoke removal afterheat recycling device
CN102755823A (en) * 2012-08-10 2012-10-31 江山市泰格化工有限公司 Method for desulfurizing high-sulphur boiler flue gas to prepare high-purity ammonium bisulfite
CN202791972U (en) * 2012-07-25 2013-03-13 上海阿波罗机械股份有限公司 Boiler tail flue gas waste heat utilization system
CN202844882U (en) * 2012-09-21 2013-04-03 上海阳高新能源科技有限公司 Low-temperature flue denitration system
CN103041923A (en) * 2012-12-28 2013-04-17 国家电网公司 Process of recycling ash removing water of wet electrostatic precipitator in thermal power plant
CN203002469U (en) * 2012-12-31 2013-06-19 福建龙净环保股份有限公司 Ash sluicing water circulating treatment system of wet type electrostatic precipitator
CN203010646U (en) * 2012-10-23 2013-06-19 中国石油化工股份有限公司 Tail gas dedusting and waste heat recovery and acid mist removal device of coal-fired boiler

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11264505A (en) * 1998-03-17 1999-09-28 Nippon Shisetsu Hozen Kk Heat-up system of boiler
CN1736560A (en) * 2004-08-17 2006-02-22 王惠生 Method for comprehensively controlling and utilizing waste water, waste gas and residue heat
CN101108303A (en) * 2007-08-02 2008-01-23 武汉凯迪电力环保有限公司 Wet-type ammonia process flue gas purifying technique for jointly removing multipollutant and system thereof
CN201606865U (en) * 2010-01-22 2010-10-13 西安热工研究院有限公司 Hydrophily type boiler smoke removal afterheat recycling device
CN202791972U (en) * 2012-07-25 2013-03-13 上海阿波罗机械股份有限公司 Boiler tail flue gas waste heat utilization system
CN102755823A (en) * 2012-08-10 2012-10-31 江山市泰格化工有限公司 Method for desulfurizing high-sulphur boiler flue gas to prepare high-purity ammonium bisulfite
CN202844882U (en) * 2012-09-21 2013-04-03 上海阳高新能源科技有限公司 Low-temperature flue denitration system
CN203010646U (en) * 2012-10-23 2013-06-19 中国石油化工股份有限公司 Tail gas dedusting and waste heat recovery and acid mist removal device of coal-fired boiler
CN103041923A (en) * 2012-12-28 2013-04-17 国家电网公司 Process of recycling ash removing water of wet electrostatic precipitator in thermal power plant
CN203002469U (en) * 2012-12-31 2013-06-19 福建龙净环保股份有限公司 Ash sluicing water circulating treatment system of wet type electrostatic precipitator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李梅: "《适合中小型燃煤锅炉的除尘脱硫一体化技术介绍》", 《2013中国环境科学学会学术年会论文集(第五卷)》 *

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Application publication date: 20140716