CN201028474Y - Double-heating surface radiation type waste heat boiler - Google Patents
Double-heating surface radiation type waste heat boiler Download PDFInfo
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- CN201028474Y CN201028474Y CNU2007200117684U CN200720011768U CN201028474Y CN 201028474 Y CN201028474 Y CN 201028474Y CN U2007200117684 U CNU2007200117684 U CN U2007200117684U CN 200720011768 U CN200720011768 U CN 200720011768U CN 201028474 Y CN201028474 Y CN 201028474Y
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Abstract
The utility model relates to a sensible heat circulating technique for gas generation synthesis gas, in particular to the waste heat boiler flow in the gasification system of the IGCC system. To be specific, the utility model is a radial type waste heat boiler with double heating surfaces, which consists of a flange connected to the gasification furnace, a housing which can bear the high pressure and high temperature of the synthesis gas, a membrane water-wall which can exchange heat by radiating, a slag water tank positioned at the bottom of the waste heat boiler. The water-wall is arranged along the housing of the radial type waste heat boiler by a double-layer octagon, the inlet of the water-wall is positioned at the super surface of the slag water tank under the radial type waste heat boiler, and the high pressure water at the water-wall inlet receive the radiating heat of the raw gas by passing the water-wall; the heated high pressure saturated vapor is drained out from the outlet of the water-wall for ICCC. The utility model is the machine for sensible heat circulating of raw gas in the gas generation system, the manufacturing, transportation and mounting are comparatively convenient, which is ideal for space membrane water-wall with big section, and is good for soot blowing and maintaining.
Description
Technical field:
The utility model relates to the sensible heat recovery technology that is applied to the high-temperature coal gasification synthesis gas, particularly the waste heat boiler flow process of integrated gasification combined cycle for power generation system (IGCC-Intergrated Gasification Combined Cycle) gasification system is specially a kind of pair of heating surface radiation waste-heat boiler.
Background technology:
The integrated gasification combined cycle for power generation system of rising day by day is that the coal conversion power generation utilizes one of technology that is in the forefront in the technology up to now.The cleaningization of coal conversion using, high efficiency, diversified target obtain the unification of height in IGCC technology.The raw gas of coal gasifier outlet generally all has higher temperature.Under technical conditions a few days ago, the purification method of coal gas is still based on the low temperature wet cleaning.Therefore, coal gas must cooling before purifying, and the medium that will be cooled of a large amount of sensible heats in the coal gas is taken away and lost.As seen, whether gas heat can make full use of, and will have a significant impact the net efficiency of combined cycle generation.The method of gas heat utilization has waste heat boiler flow process and chilling process.Utilize radiant type and convection type waste heat boiler to reclaim sensible heat in the synthesis gas to greatest extent, to produce high steam or other processing mediums of preheating (removing the synthesis gas of gas turbine and re-injection nitrogen etc. as heating).This method can reclaim the energy that is equivalent to 14%-18% in the feed coal low heat valve, makes heating gas efficient can reach 90%-95%, also will make the net efficiency of combined cycle generation improve 4%-5% (absolute value).Development and Application is the key of China development IGCC technology in the radiation waste-heat boiler of waste heat boiler flow process.
The utility model content:
The purpose of this utility model is to provide a kind of pair of heating surface radiation waste-heat boiler, it is to be applied to the equipment that the sensible heat of raw gas radiant type reclaims in the gasification system, its manufacturing, transportation and installation are comparatively convenient, and be comparatively desirable to heavy in section space fin panel casing, is beneficial to and blows ash and maintenance.
The technical solution of the utility model is:
Two heating surface radiation waste-heat boilers are to be made of jointly the flange that links to each other with gasification furnace, the housing that bears synthesis gas high pressure and high temperature, the elements such as pulp water pond that have the fin panel casing of radiation heat transfer and be positioned at waste heat boiler bottom.Water-cooling wall is double-deck octagonal layout along the enclosure interior of radiation waste-heat boiler, the water-cooling wall inlet is positioned at the water surface top, pulp water pond of radiation waste-heat boiler bottom, the water under high pressure of water-cooling wall inlet is accepted the radiations heat energy of raw gas through water-cooling wall, be heated to form high-pressure saturated water vapor and discharge, be used for combined cycle generation by the water-cooling wall outlet.The radiation waste-heat boiler bottom is provided with the pulp water pond of collecting slag, and pulp water enters the bottom lock hopper by the outlet of radiation waste-heat boiler bottom.The raw gas that reclaims through sensible heat flows to following flow process by the raw gas outlet.
Two heating surface radiation waste-heat boilers are connected with gasification furnace, has the housing that bears high temperature and high pressure, housing adopts high chromium heat resisting steel (as: U.S. trade mark SA387Cr11CL2), and bearing temperature is 600-1400 ℃, bears pressure and is the pressure-bearing sealing structure greater than 4MPa.
The beneficial effects of the utility model are:
1, two heating surface radiation waste-heat boilers of providing of the utility model can be applied to the IGCC electricity generation system, and the sensible heat that absorbs raw gas produces high steam and is used for generating.In addition, can also be applied to be applied in the chemical system in the coal gasification cement sensible heat recovery system in the chemical producing system, the sensible heat that absorbs raw gas produces high steam, can produce application technology steam and auxiliary steam in the Chemical Manufacture.
2, the water-cooling wall that relates to of the utility model octagonal structure of arranging, advantage is: make, transportation and install comparatively convenient, comparatively desirable to heavy in section space fin panel casing, be beneficial to and blow ash and maintenance.
3, the water-cooling wall that relates to of the utility model is arranged as bilayer and helps improving heat transfer efficiency, and retention efficiency height, good dedusting effect reduce fouling of heating surface.
Description of drawings:
Fig. 1 is the structural representation of two heating surface radiation waste-heat boilers.
Fig. 2 is a B-B cutaway view among Fig. 1.
Fig. 3 is a C-C cutaway view among Fig. 1.
Fig. 4 is a D-D cutaway view among Fig. 1.
Among the figure, 1 flange; The outlet of 2 water-cooling walls; The outlet of 3 raw gas; 4 housings; 5 water-cooling walls; 6 water-cooling walls inlet; 7 pulp water ponds; The outlet of 8 pulp water ponds; 9 internal layer water-cooling walls; 10 internal layer water-cooling wall collection casees; 11 outer water-cooling walls; 12 outer water-cooling wall collection casees.
The specific embodiment:
As Fig. 1-shown in Figure 4, the two heating surface radiation waste-heat boilers of the utility model mainly are by the flange 1 that links to each other with gasification furnace, bear the housing 4 of synthesis gas high pressure and high temperature, the elements such as pulp water pond 7 that have the fin panel casing 5 of radiation heat transfer and be positioned at waste heat boiler bottom constitute jointly.Water-cooling wall 5 is double-deck octagonal layout along the housing of radiation waste-heat boiler, water-cooling wall inlet 6 is positioned at 7 water surface tops, pulp water pond of radiation waste-heat boiler bottom, the water under high pressure of water-cooling wall inlet 6 is accepted the radiations heat energy of raw gas through water-cooling wall 5, be heated to form high-pressure saturated water vapor and discharge, be used for combined cycle generation by water-cooling wall outlet 2.The radiation waste-heat boiler bottom is provided with the pulp water pond 7 of collecting slag, and pulp water enters the bottom lock hopper by the pulp water pond outlet 8 of radiation waste-heat boiler bottom.The raw gas that reclaims through sensible heat flows to following flow process by raw gas outlet 3.
As shown in Figure 2, water-cooling wall outlet 2 is connected with internal layer water-cooling wall collection case 10.The utility model internal layer water-cooling wall 9 and internal layer water-cooling wall collection case 10 are logical by being weldingly connected.
As shown in Figure 3, the double-deck octagonal water-cooling wall that is arranged at housing 4 inboards is respectively: internal layer water-cooling wall 9 and outer water-cooling wall 11, water-cooling wall outlet 2 are connected with outer water-cooling wall collection case 12.Outer water-cooling wall 11 of the utility model and outer water-cooling wall collection case 12 are logical by being weldingly connected.
Radiation waste-heat boiler is arranged in the main therrmodynamic system of IGCC system, and the high steam of generating usefulness is provided for turbine generating system.
The performance that this equipment reaches is as follows:
Radiation loss:＜0.4%
Availability:＞95%
Radiation waste-heat boiler inlet temperature: 1200～1400 ℃
Radiation waste-heat boiler outlet temperature: 600～700 ℃
Operating pressure (tube side):＞10MPa
Operating pressure (shell side):＞4.0MPa
Claims (2)
1. two heating surface radiation waste-heat boilers have housing, it is characterized in that: the housing inboard is provided with fin panel casing, and water-cooling wall is double-deck octagonal along the radiation waste-heat boiler enclosure interior and arranges.
2. according to described pair of heating surface radiation waste-heat boiler of claim 1, it is characterized in that: the radiation waste-heat boiler bottom is provided with the pulp water pond of collecting thick slag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200117684U CN201028474Y (en) | 2007-04-20 | 2007-04-20 | Double-heating surface radiation type waste heat boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200117684U CN201028474Y (en) | 2007-04-20 | 2007-04-20 | Double-heating surface radiation type waste heat boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201028474Y true CN201028474Y (en) | 2008-02-27 |
Family
ID=39132684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200117684U Expired - Fee Related CN201028474Y (en) | 2007-04-20 | 2007-04-20 | Double-heating surface radiation type waste heat boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201028474Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213409A (en) * | 2011-04-02 | 2011-10-12 | 华东理工大学 | Double-barrel water cooled wall type radiation waste boiler with adjusting function and industrial application thereof |
| CN102492486A (en) * | 2011-12-23 | 2012-06-13 | 上海锅炉厂有限公司 | Double-sided water-wall cylinder-type synthetic gas cooler |
| CN102966944A (en) * | 2012-12-11 | 2013-03-13 | 中国东方电气集团有限公司 | CFB (Circulating Fluidized Bed)-rotary radiation boiler for reducing contamination of high-alkalinity coal |
| CN103013582A (en) * | 2012-12-11 | 2013-04-03 | 中国东方电气集团有限公司 | Integral bunchy radiation preheating mixing-type energy utilization device with flue gas chilling |
| CN108800096A (en) * | 2018-08-01 | 2018-11-13 | 四川科新机电股份有限公司 | A kind of waste heat boiler with fluidized gas distributor |
-
2007
- 2007-04-20 CN CNU2007200117684U patent/CN201028474Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102213409A (en) * | 2011-04-02 | 2011-10-12 | 华东理工大学 | Double-barrel water cooled wall type radiation waste boiler with adjusting function and industrial application thereof |
| CN102492486A (en) * | 2011-12-23 | 2012-06-13 | 上海锅炉厂有限公司 | Double-sided water-wall cylinder-type synthetic gas cooler |
| CN102966944A (en) * | 2012-12-11 | 2013-03-13 | 中国东方电气集团有限公司 | CFB (Circulating Fluidized Bed)-rotary radiation boiler for reducing contamination of high-alkalinity coal |
| CN103013582A (en) * | 2012-12-11 | 2013-04-03 | 中国东方电气集团有限公司 | Integral bunchy radiation preheating mixing-type energy utilization device with flue gas chilling |
| CN103013582B (en) * | 2012-12-11 | 2014-08-27 | 中国东方电气集团有限公司 | Integral bunchy radiation preheating mixing-type energy utilization device with flue gas chilling |
| CN102966944B (en) * | 2012-12-11 | 2015-05-13 | 中国东方电气集团有限公司 | CFB (Circulating Fluidized Bed)-rotary radiation boiler for reducing contamination of high-alkalinity coal |
| CN108800096A (en) * | 2018-08-01 | 2018-11-13 | 四川科新机电股份有限公司 | A kind of waste heat boiler with fluidized gas distributor |
| CN108800096B (en) * | 2018-08-01 | 2024-04-16 | 四川科新机电股份有限公司 | Waste heat boiler with fluidization gas distributor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080227 Termination date: 20150420 |
|
| EXPY | Termination of patent right or utility model |