CN113773879A - Hood for circulating fluidized bed gasification furnace - Google Patents
Hood for circulating fluidized bed gasification furnace Download PDFInfo
- Publication number
- CN113773879A CN113773879A CN202111172603.6A CN202111172603A CN113773879A CN 113773879 A CN113773879 A CN 113773879A CN 202111172603 A CN202111172603 A CN 202111172603A CN 113773879 A CN113773879 A CN 113773879A
- Authority
- CN
- China
- Prior art keywords
- hood
- fluidized bed
- circulating fluidized
- gasifying agent
- elbow
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000002309 gasification Methods 0.000 title claims abstract description 38
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims abstract description 3
- 238000005728 strengthening Methods 0.000 claims 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 32
- 239000000463 material Substances 0.000 abstract description 3
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 239000002893 slag Substances 0.000 abstract description 3
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 6
- 238000005243 fluidization Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 239000000571 coke Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
- C10J3/56—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/54—Gasification of granular or pulverulent fuels by the Winkler technique, i.e. by fluidisation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN A CARRIER GAS OR AIR
- F23C10/00—Fluidised bed combustion apparatus
- F23C10/18—Details; Accessories
- F23C10/20—Inlets for fluidisation air, e.g. grids; Bottoms
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention relates to a hood for a circulating fluidized bed gasification furnace, which particularly comprises a hood body (1), an inner core pipe (2), a reinforcing rib I (3), a 90-degree elbow (4), a reinforcing rib II (5), a hood branch pipe (6), a gasifying agent outlet I (7) and a gasifying agent outlet II (8). The invention has the technical advantages that: the initial speed of the gasification agent can be effectively improved, air is uniformly discharged, and material blockage is prevented; meanwhile, the connection mode of integral casting enables the sealing performance of the pipeline to be better, slag bonding is effectively prevented, the service life of the blast cap is prolonged, and the production efficiency is improved; finally, the reinforcing ribs are added, so that the stability of the overall structure of the hood can be effectively improved.
Description
Technical Field
The invention belongs to a key technology for enhancing the introducing stability of a gasification agent in a circulating fluidized bed gasification furnace, and particularly relates to a hood for the circulating fluidized bed gasification furnace.
Background
When the circulating fluidized bed gasification furnace operates, the temperature in the furnace reaches up to 900 DEGoAbout C, the surface temperature of the material particles is higher than the temperature in the furnace by 100-oC, the bearing temperature of the blast cap is 1200 DEGoAbove C, the blast cap is required to have strong oxidation resistance, high fatigue resistance, good wear resistance, and the like. The connection mode of the inner core pipe and the air inlet pipe of the existing blast cap is welding, and the blast cap is easy to open welding in a high-temperature environment, so that low-coke slag of the gasification furnace enters the air inlet pipe from the open welding position, the air inlet pipe of the open welding blast cap is seriously abraded at an elbow, other blast caps can be blocked, the work of other blast caps is influenced, the phenomena of uneven fluidization of the gasification furnace, local coking of the furnace wall and the like are caused, the carbon conversion rate is low, and the service life of the gasification furnace is shortened.
Disclosure of Invention
The invention solves the problems: overcomes the defects of the prior art, provides the blast cap for the circulating fluidized bed gasification furnace, realizes uniform fluidization and full solid-contact in the gasification furnace, and can effectively improve the carbon conversion rate.
The technical scheme of the invention is as follows: a hood for a circulating fluidized bed coal gasification furnace mainly comprises a hood body (1), an inner core pipe (2), a reinforcing rib I (3), an elbow (4), a reinforcing rib II (5), a hood branch pipe (6), a gasifying agent outlet I (7) and a gasifying agent outlet II (8).
As further explanation of the invention, the top of the hood body (1) is an arc top with a certain radian, the top and the outer wall are integrally cast, and the gasification agent outlets I (7) are uniformly distributed at the lower end of the hood body (1). Specifically, the gasification agent outlets I (7) are round holes with the aperture phi =30-40 mm, the number of the holes is 12, and the distance between the circle center of the gasification agent outlet I (7) and the reinforcing rib (3) is 50-60 mm.
As a further explanation of the invention, one end of the elbow (4) is connected with the hood body (1), the other end of the elbow is connected with the hood branch pipe (6), and the inner core pipe (2), the elbow (4) and the hood branch pipe (6) are integrally cast.
As a further explanation of the invention, the inner core pipe (2) is characterized in that the bottom and the upper part are distributed with gasification agent outlets II (8), the gasification agent outlets II (8) are round hole type, and the hole diameter is 20-30 mm. Specifically, 4 gasification agent outlets II (8) are uniformly distributed at the top; the gasification agent outlet II (8) at the upper part is divided into an upper layer and a lower layer, the distance between the upper layer and the center of the lower layer hole is 20 mm, 8 gasification agent outlets are uniformly distributed on each layer, and the distance between the center of the upper layer hole and the top is 10-30 mm.
As further explanation of the invention, the reinforcing ribs I (3) are uniformly distributed and fixed at the joint of the hood body (1) and the elbow (4), and the reinforcing ribs II (5) are used for fixing the hood branch pipes (6).
Compared with the prior art, the invention has the advantages that:
(1) the inner core pipe (2), the 90-degree elbow (4) and the blast cap branch pipe (6) are cast integrally, the whole sealing performance is improved, and the stability of the blast cap branch pipe (6) is improved.
(2) The gasifying agent outlet I (7) and the gasifying agent outlet II (8) are round holes, so that the initial wind speed can be improved, and the uniformity of the fluidized bed can be further improved. Meanwhile, the method can effectively prevent the materials from entering the blast cap hole to cause uneven fluidization and bias flow in the furnace, and prevent the blast cap hole and the blast pipeline from being blocked due to adhesion of the coke slag.
(3) The hood body (1) is an arc top, and the connection between the arc top and the outer wall is changed into integral casting from welding, so that the service life of the hood is prolonged.
Drawings
FIG. 1 is a sectional view showing the overall structure of a hood for a circulating fluidized bed gasification furnace.
FIG. 2 is a side view of a hood for a circulating fluidized bed gasifier.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The core idea of the invention is as follows: the circulating fluidized bed gasification furnace is used as a core utilization technology of a coal cleaning high-efficiency technology, and the gasification agent is very important to be fully contacted with raw materials, so that raw material particles can be uniformly fluidized, the fluidization efficiency is high, and the carbon conversion rate is further improved. In view of the above, and in conjunction with FIG. 1, the delivery of gasification agents in the present technology can be summarized as: after entering the fixed blast cap branch pipe (6), the gasifying agent is sprayed out from the gasifying agent outlet II (8) along the 90-degree elbow (4) and the inner core pipe (2), passes through the blast cap body (1) and the partition wall of the inner core pipe (2), and is sent into the gasification furnace from the gasifying agent outlet I (7) to be uniformly mixed with the raw materials. The reinforcing ribs I (3) and the reinforcing ribs II (5) are additionally arranged at key positions, so that the stability of the blast cap is facilitated, the service life of the blast cap is effectively prolonged, and the fluidization uniformity is enhanced.
The present technology is further illustrated below with reference to examples of the present invention.
As shown in figure 1, the blast cap for the circulating fluidized bed coal gasifier mainly comprises a blast cap body (1), an inner core pipe (2), a reinforcing rib I (3), an elbow (4), a reinforcing rib II (5), a blast cap branch pipe (6), a gasifying agent outlet I (7) and a gasifying agent outlet II (8).
As further explanation of the invention, 4 reinforcing ribs I (3) are uniformly distributed between the hood body (1) and the elbow (4), and 1 reinforcing rib II (5) is arranged right below the hood branch pipe (6).
As further explanation of the invention, the top of the hood body (1) is an arc top with a certain radian, the top and the outer wall are integrally cast, and the gasification agent outlets I (7) are uniformly distributed at the lower end of the hood body (1). Specifically, the gasification agent outlets I (7) are round holes with the aperture phi =30-40 mm, the number of the holes is 12, and the distance between the circle center of the gasification agent outlet I (7) and the reinforcing rib (3) is 50-60 mm.
As a further explanation of the invention, one end of the elbow (4) is connected with the hood body (1), the other end of the elbow is connected with the hood branch pipe (6), and the inner core pipe (2), the elbow (4) and the hood branch pipe (6) are integrally cast.
As a further explanation of the invention, the inner core pipe (2) is characterized in that the bottom and the upper part are distributed with gasification agent outlets II (8), the gasification agent outlets II (8) are round hole type, and the hole diameter is 20-30 mm. Specifically, 4 gasification agent outlets II (8) are uniformly distributed at the top; the gasification agent outlet II (8) at the upper part is divided into an upper layer and a lower layer, the distance between the upper layer and the center of the lower layer hole is 20 mm, 8 gasification agent outlets are uniformly distributed on each layer, and the distance between the center of the upper layer hole and the top is 10-30 mm. In other words, the total number of gasifying agent outlets II (8) is 20.
As further explanation of the invention, the reinforcing ribs I (3) are uniformly distributed and fixed at the joint of the hood body (1) and the elbow (4), and the reinforcing ribs II (5) are used for fixing the hood branch pipes (6).
In addition, as a further explanation of the technology of the invention, the blast cap for the circulating fluidized bed gasifier not only can be used as the blast cap of the gasifier, but also can be applied to gas-solid reactors for pyrolysis, combustion and the like.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention. The scope of applicability of the present invention is defined by the appended claims and their equivalents.
Claims (5)
1. The utility model provides a hood for circulating fluidized bed gasifier, comprises the hood body (1), inner core pipe (2), strengthening rib I (3), 90 elbow (4), strengthening rib II (5), hood branch pipe (6), gasification agent export I (7) and gasification agent export II (8), its characterized in that, there are 4 strengthening rib I (3) between the hood body (1) and elbow (4), has 1 strengthening rib II (5) under hood branch pipe (6).
2. The hood for the circulating fluidized bed gasifier according to claim 1, wherein the top of the hood body (1) is an arc top with a certain radian, the top and the outer wall are connected by casting integrally, and the gasifying agent outlets I (7) are uniformly distributed at the lower end of the hood body (1).
3. The hood for the circulating fluidized bed gasifier according to claim 1, wherein the gasifying agent outlets I (7) are round holes with the diameter phi =30-40 mm, the number of the gasifying agent outlets I (7) is 12, and the distance between the circle center of the gasifying agent outlet I (7) and the reinforcing rib (3) is 50-60 mm.
4. The hood for the circulating fluidized bed gasifier according to claim 1, wherein the gasifying agent outlet II (8) is of a round hole type, and the hole diameter is 20-30 mm.
5. The hood for a circulating fluidized bed gasification furnace according to claim 1, wherein the connection between the inner core tube (2), the elbow (4) and the hood branch tube (6) is integrally cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111172603.6A CN113773879A (en) | 2021-10-08 | 2021-10-08 | Hood for circulating fluidized bed gasification furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111172603.6A CN113773879A (en) | 2021-10-08 | 2021-10-08 | Hood for circulating fluidized bed gasification furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113773879A true CN113773879A (en) | 2021-12-10 |
Family
ID=78855171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111172603.6A Pending CN113773879A (en) | 2021-10-08 | 2021-10-08 | Hood for circulating fluidized bed gasification furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113773879A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2777375Y (en) * | 2005-03-23 | 2006-05-03 | 淄博科伦合金材料有限公司 | Hood for fluidized bed boiler |
| CN101881440A (en) * | 2010-07-15 | 2010-11-10 | 西安热工研究院有限公司 | Annular constant-current hood |
| CN201764492U (en) * | 2010-07-15 | 2011-03-16 | 西安热工研究院有限公司 | Annular current stabilization wind cap |
| CN204114930U (en) * | 2014-09-23 | 2015-01-21 | 华能泰安众泰发电有限公司 | A kind of modified slag leak-proof funnel cap |
| CN205501218U (en) * | 2016-03-30 | 2016-08-24 | 青岛天正重工机械有限公司 | Circulating fluidized bed is hood for gasifier |
| CN205897124U (en) * | 2016-07-29 | 2017-01-18 | 任浩 | Multi -wind is to pressure boost hood |
| CN206803137U (en) * | 2017-05-25 | 2017-12-26 | 宁波众茂姚北热电有限公司 | A kind of bell-type windshield |
| CN207065555U (en) * | 2017-07-20 | 2018-03-02 | 中国华能集团清洁能源技术研究院有限公司 | A kind of modified fluidized-bed combustion boiler air cap device |
| CN109058984A (en) * | 2018-09-10 | 2018-12-21 | 江苏富强特钢有限公司 | A kind of wind cap for hearth of anti-blocking |
| CN209341244U (en) * | 2018-12-12 | 2019-09-03 | 刘家君 | A kind of blast cap of circulating fluidized bed |
| CN112210403A (en) * | 2020-10-28 | 2021-01-12 | 新奥科技发展有限公司 | Gasifying agent distribution plate and fluidized bed gasification furnace |
| CN112503515A (en) * | 2020-12-11 | 2021-03-16 | 哈尔滨锅炉厂有限责任公司 | Novel CFB boiler hood inner tube subassembly |
-
2021
- 2021-10-08 CN CN202111172603.6A patent/CN113773879A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2777375Y (en) * | 2005-03-23 | 2006-05-03 | 淄博科伦合金材料有限公司 | Hood for fluidized bed boiler |
| CN101881440A (en) * | 2010-07-15 | 2010-11-10 | 西安热工研究院有限公司 | Annular constant-current hood |
| CN201764492U (en) * | 2010-07-15 | 2011-03-16 | 西安热工研究院有限公司 | Annular current stabilization wind cap |
| CN204114930U (en) * | 2014-09-23 | 2015-01-21 | 华能泰安众泰发电有限公司 | A kind of modified slag leak-proof funnel cap |
| CN205501218U (en) * | 2016-03-30 | 2016-08-24 | 青岛天正重工机械有限公司 | Circulating fluidized bed is hood for gasifier |
| CN205897124U (en) * | 2016-07-29 | 2017-01-18 | 任浩 | Multi -wind is to pressure boost hood |
| CN206803137U (en) * | 2017-05-25 | 2017-12-26 | 宁波众茂姚北热电有限公司 | A kind of bell-type windshield |
| CN207065555U (en) * | 2017-07-20 | 2018-03-02 | 中国华能集团清洁能源技术研究院有限公司 | A kind of modified fluidized-bed combustion boiler air cap device |
| CN109058984A (en) * | 2018-09-10 | 2018-12-21 | 江苏富强特钢有限公司 | A kind of wind cap for hearth of anti-blocking |
| CN209341244U (en) * | 2018-12-12 | 2019-09-03 | 刘家君 | A kind of blast cap of circulating fluidized bed |
| CN112210403A (en) * | 2020-10-28 | 2021-01-12 | 新奥科技发展有限公司 | Gasifying agent distribution plate and fluidized bed gasification furnace |
| CN112503515A (en) * | 2020-12-11 | 2021-03-16 | 哈尔滨锅炉厂有限责任公司 | Novel CFB boiler hood inner tube subassembly |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20211210 |