CN1944591A - Chilling ring of gasifying furnace - Google Patents

Chilling ring of gasifying furnace Download PDF

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Publication number
CN1944591A
CN1944591A CN 200610137885 CN200610137885A CN1944591A CN 1944591 A CN1944591 A CN 1944591A CN 200610137885 CN200610137885 CN 200610137885 CN 200610137885 A CN200610137885 A CN 200610137885A CN 1944591 A CN1944591 A CN 1944591A
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China
Prior art keywords
ring
endless tube
chilling
quench liquid
gasifying furnace
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CN 200610137885
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CN100552006C (en
Inventor
高瑞恒
宋晓峰
安兵涛
郭进军
王军
蔡德生
李兵科
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Changzheng Engineering Co Ltd
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Beijing Aerospace Petrochemical Technology and Equipment Engineering Corp Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]

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Abstract

The chilling ring for gasifying furnace includes outer ring pipe, inner ring pipe, chilling liquid distributing chamber, downtake and cooling liquid conveying pipe. It has slag nails homogeneously distributed in the outer surface of the upper part of the outer ring pipe and refractory material filled among the slag nails to lower the work temperature of the chilling ring and avoid the direct erode of the high temperature synthetic gas and the slag to the chilling ring so as to increase the service life of the chilling ring. In addition, it also has small holes distributed in the lower part of the outer ring pipe, so that partial chilling liquid may be sprayed to the main flow of synthetic gas for lowering temperature quickly.

Description

A kind of chilling ring of gasifying furnace
Technical field
The present invention relates to the key structure in the powdered coal pressuring gasified technology, specifically, relate to a kind of improvement of powdered coal pressuring gasified stove chilling ring structure.
Technical background
Coal Gasification Technology is a kind of technology that the coal high-efficiency cleaning can be utilized.Coal obtains crude synthesis gas through gasifying process, to crude synthesis gas carry out again after the subsequent disposal to process gas can be used as the unstripped gas of synthetic ammonia or other Chemicals.
Vapourizing furnace is the key equipment in the Coal Gasification Technology.Fine coal incomplete combustion in the vapourizing furnace vaporizer enters the shock chamber after generating about 1500 ℃ high-temperature synthesis gas and slag.The effect of shock chamber is exactly that high-temperature synthesis gas is separated with slag cooling and realization gas slag, and the life-span length of chilling ring then directly has influence on the cycle of the normal operation of vapourizing furnace in the shock chamber.The structure of existing chilling ring comprises outer shroud, interior ring, the import of Quench liquid, the outlet of Quench liquid, downtake, it between outer shroud and the interior ring Quench liquid distribution chamber, Quench liquid is entered by descending along the downtake internal surface behind the Quench liquid distribution chamber by the import of Quench liquid, form water membrane at the downtake internal surface, synthetic gas during by downtake and moisture film carry out heat and mass, realize humidifying cooling to synthetic gas.There is flimsy shortcoming in the chilling ring of this structure owing to cooling rate in implementation procedure is unhappy.From the analysis of chilling ring damaged condition as can be seen, the major cause that chilling ring damages is because chilling ring directly contacts with slag with high-temperature synthesis gas, cause the chilling ring working temperature too high, secular hot operation greatly reduces the work-ing life of chilling ring, simultaneously high-temperature synthesis gas and slag directly washing away the work-ing life that also can reduce chilling ring chilling ring.
Summary of the invention
Technology of the present invention is dealt with problems: it is too high to overcome its working temperature that directly contacts with slag with high-temperature synthesis gas when existing chilling ring is worked and cause, make the defective of chilling ring life-span reduction, the lower novel chilling ring of gasifying furnace of temperature when a kind of work is provided, herewith chilling ring can be avoided high-temperature synthesis gas and slag to its directly wash away, and is better to the Quench cooling humidifying effect of synthetic gas.
Technical scheme of the present invention: a kind of chilling ring of gasifying furnace, comprise outer endless tube, interior endless tube, Quench liquid distribution chamber, downtake and cooling fluid transfer lime, it between outer endless tube and the interior endless tube Quench liquid distribution chamber, the cooling fluid transfer lime is connected with Quench liquid distribution chamber, interior endless tube is fixed on the downtake, be equipped with Quench pendular ring crack Pai Kou between outer endless tube and the downtake, its characteristics are: described outer shroud pipe internal surface is the internal thread form; Outside described, be equipped with equally distributed slag nail on the outer semi-ring face of the endless tube first half, between the slag nail, be filled with refractory matter.
The present invention's advantage compared with prior art is:
(1) internal surface of the outer endless tube of chilling ring is made screw thread form, has strengthened the heat interchanging area between outer endless tube and chilled water, has strengthened the cooling-down effect of the external endless tube of chilled water.
(2) during gasifier operation, one deck slag blanket can be adhered in the refractory matter surface of endless tube outside chilling ring, the effect of slag blanket is to avoid synthetic gas and lime-ash chilling ring directly to be washed away the harm that causes on the one hand, slag blanket can play the effect of flame retardant coating on the other hand, make the working temperature of chilling ring side towards the fire reduce, so just prolonged chilling ring work-ing life.
(3) owing to be equipped with equally distributed Quench liquid hole Pai Kou on the semi-ring face of endless tube Lower Half outside, Quench liquid is entered by a part behind the Quench liquid distribution chamber by the import of Quench liquid and descends along the downtake internal surface, form water membrane at the downtake internal surface, synthetic gas during by downtake and moisture film carry out heat and mass, realization is carried out humidifying cooling to synthetic gas, another part Quench liquid is directly sprayed in the synthetic gas by Quench liquid hole Pai Kou synthetic gas is carried out the Quench cooling, realizes the synthetic gas fast cooling.
Description of drawings
Fig. 1 is a structural representation of the present invention:
Fig. 2 is a Quench liquid hole row mouthful direction synoptic diagram.
Embodiment
As shown in Figure 1, the present invention mainly comprises: outer endless tube 1, interior endless tube 2, semi-circular Quench liquid distribution chamber 4, downtake 7, cooling fluid transfer lime 8, outer endless tube 1 internal surface is the internal thread form, it between outer endless tube 1 and the interior endless tube 2 semi-circular Quench liquid distribution chamber 4, cooling fluid transfer lime 8 is connected with Quench liquid distribution chamber 4, interior endless tube 2 is fixed on the downtake 7, be equipped with equally distributed slag nail 3 outside on the outer semi-ring face of endless tube 1 first half, the shape of slag nail 3 can be the cylindrical metal rod, as rod iron, rod iron etc., be filled with refractory matter 3 of slag nails, refractory matter can be analog materials such as silicon carbide.Slag nail 3 tamped density on the endless tube 1 outside is 0.1～0.3, the outer semi-ring face of the outer endless tube first half of tamped density=n * s/, and wherein n is that slag is followed closely 3 quantity, s is that slag is followed closely 3 cross-sectional areas.Be equipped with the equally distributed Quench liquid of three circles hole row's mouth 5 outside on the semi-ring face of endless tube 1 Lower Half, be equipped with Quench pendular ring crack row's mouth 6 between outer endless tube 1 and the downtake 7.The diameter of each Quench liquid hole row's mouth 5 is 5～10mm, the cone angle of three circle Quench liquid hole row's mouthful 5 medullary rays and the formation of downtake 7 medullary rays is respectively outer ring 80 degree, centre circle 65 degree and inner ring 45 degree in the present embodiment, and the quantity ratio of outer ring, centre circle and inner ring hole row mouth is 3: 2: 1.
Working process of the present invention: at first can adhere to one deck slag blanket when entering the shock chamber behind high-temperature synthesis gas that vaporizer is discharged and the slag on the refractory matter surface through chilling ring, slag blanket has avoided synthetic gas and lime-ash chilling ring directly to be washed away the harm that causes on the one hand, slag blanket can play the effect of flame retardant coating on the other hand, increase the thermal resistance between synthetic gas and outer endless tube, made the working temperature of chilling ring side towards the fire reduce.The internal surface of the outer endless tube 1 of chilling ring is made screw thread form, has strengthened the heat interchanging area between outer endless tube 1 and chilled water, has strengthened the cooling-down effect of the external endless tube 1 of chilled water.Simultaneously, Quench liquid is entered by Quench liquid distribution chamber 4 back parts by Quench liquid import 8 and descends along downtake 7 internal surfaces, form water membrane at downtake 7 internal surfaces, carry out heat and mass with moisture film at synthetic gas during by downtake 7, realization is carried out humidifying cooling to synthetic gas; Another part Quench liquid directly carries out Quench cooling with spraying in the synthetic gas to synthetic gas by Quench liquid hole row's mouth 5, and synthetic gas is carried out fast cooling.

Claims (7)

1, a kind of chilling ring of gasifying furnace, comprise outer endless tube (1), interior endless tube (2), Quench liquid distribution chamber (4), downtake (7) and cooling fluid transfer lime (8), be Quench liquid distribution chamber (4) between outer endless tube (1) and the interior endless tube (2), cooling fluid transfer lime (8) is connected with Quench liquid distribution chamber (4), interior endless tube (2) is fixed on the downtake (7), be equipped with Quench pendular ring crack Pai Kou (6) between outer endless tube (1) and the downtake (7), it is characterized in that: described outer endless tube (1) internal surface is the internal thread form; Be equipped with equally distributed slag nail (3) on the outer semi-ring face of endless tube outside described (1) first half, between slag nail (3), be filled with refractory matter.
2, a kind of chilling ring of gasifying furnace according to claim 1 is characterized in that: be equipped with three circle equally distributed Quench liquid hole Pai Kou (5) outside on the semi-ring face of endless tube (1) Lower Half.
3, a kind of chilling ring of gasifying furnace according to claim 1 is characterized in that: described slag nail (3) is a cylindrical steel rods.
4, a kind of chilling ring of gasifying furnace according to claim 1 is characterized in that: described refractory matter is a carbofrax material.
5, a kind of chilling ring of gasifying furnace according to claim 1 is characterized in that: described slag nail (3) tamped density on the endless tube (1) outside is 0.1～0.3.
6, a kind of chilling ring of gasifying furnace according to claim 1 is characterized in that: the diameter of described each Quench liquid hole Pai Kou (5) is 5～10mm.
7, a kind of chilling ring of gasifying furnace according to claim 1, it is characterized in that: the cone angle of described Quench liquid hole Pai Kou (5) medullary ray and the formation of downtake (7) medullary ray is respectively outer ring 80 degree, centre circle 65 degree and inner ring 45 degree, and the quantity ratio of outer ring, centre circle and inner ring hole row mouth is 3: 2: 1.
CN 200610137885 2006-11-09 2006-11-09 A kind of chilling ring of gasifying furnace Active CN100552006C (en)

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CN100552006C CN100552006C (en) 2009-10-21

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101407342B (en) * 2008-05-20 2010-09-08 山西丰喜肥业(集团)股份有限公司 Cooling water process used for chilling ring of gasification furnace
CN102051235A (en) * 2011-01-10 2011-05-11 神华集团有限责任公司 Multistage rotary chilling and strengthening device and application thereof
CN102559279A (en) * 2010-10-30 2012-07-11 通用电气公司 System and method for protecting gasifier quench ring
CN103525469A (en) * 2012-07-03 2014-01-22 惠生（南京）清洁能源股份有限公司 Chilling ring of gasification furnace
CN104531228A (en) * 2014-12-18 2015-04-22 广东正鹏生物质能源科技有限公司 Device and method for implementing efficient purification of biomass gas in furnace
CN105043131A (en) * 2015-08-06 2015-11-11 朱峰 Shock cooling heat exchanger for cooling flue gas
CN106281473A (en) * 2016-09-09 2017-01-04 航天长征化学工程股份有限公司 Chilling device
CN106635182A (en) * 2016-11-29 2017-05-10 东方电气集团东方锅炉股份有限公司 Gasification furnace chilling ring
CN106635180A (en) * 2016-11-17 2017-05-10 中国五环工程有限公司 Water quenching structure of gasifier

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101407342B (en) * 2008-05-20 2010-09-08 山西丰喜肥业(集团)股份有限公司 Cooling water process used for chilling ring of gasification furnace
CN102559279A (en) * 2010-10-30 2012-07-11 通用电气公司 System and method for protecting gasifier quench ring
US9057030B2 (en) 2010-10-30 2015-06-16 General Electric Company System and method for protecting gasifier quench ring
CN102051235A (en) * 2011-01-10 2011-05-11 神华集团有限责任公司 Multistage rotary chilling and strengthening device and application thereof
CN102051235B (en) * 2011-01-10 2013-08-14 神华集团有限责任公司 Multistage rotary chilling and strengthening device and application thereof
CN103525469A (en) * 2012-07-03 2014-01-22 惠生（南京）清洁能源股份有限公司 Chilling ring of gasification furnace
CN103525469B (en) * 2012-07-03 2015-08-19 惠生（南京）清洁能源股份有限公司 A kind of chilling ring of gasifying furnace
CN104531228B (en) * 2014-12-18 2017-06-20 广东正鹏生物质能源科技有限公司 The device and method of high-efficient purification in a kind of achievable biomass gas stove
CN104531228A (en) * 2014-12-18 2015-04-22 广东正鹏生物质能源科技有限公司 Device and method for implementing efficient purification of biomass gas in furnace
CN105043131A (en) * 2015-08-06 2015-11-11 朱峰 Shock cooling heat exchanger for cooling flue gas
CN105928382A (en) * 2015-08-06 2016-09-07 青岛中正周和科技发展有限公司 Quenching heat exchanger provided with multiple secondary heat exchange devices
CN105865222B (en) * 2015-08-06 2017-02-22 杨丙 Quenching heat exchanger
CN105928382B (en) * 2015-08-06 2017-04-12 青岛中正周和科技发展有限公司 Quenching heat exchanger provided with multiple secondary heat exchange devices
CN105928381A (en) * 2015-08-06 2016-09-07 杨丙 Quenching heat exchanger with variable spray hole density
CN106281473A (en) * 2016-09-09 2017-01-04 航天长征化学工程股份有限公司 Chilling device
CN106635180A (en) * 2016-11-17 2017-05-10 中国五环工程有限公司 Water quenching structure of gasifier
CN106635182A (en) * 2016-11-29 2017-05-10 东方电气集团东方锅炉股份有限公司 Gasification furnace chilling ring

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