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CN-122012144-A - Biomass gasification feeding system

CN122012144ACN 122012144 ACN122012144 ACN 122012144ACN-122012144-A

Abstract

The application provides a biomass gasification feeding system, and relates to the technical field of biomass energy. The air inlet device comprises an air blower, a feed bin, a first feeder, a first air locking valve, a middle bin and a second air locking valve, wherein the feed bin, the first feeder, the first air locking valve, the middle bin and the second air locking valve are sequentially arranged along the positive direction of a first conveying path and are connected in an end-to-end mode, a discharge port of the second air locking valve is used for being connected with a feed port of a gasification furnace, the first air locking valve and the second air locking valve are valves allowing unidirectional conduction along the positive direction, the middle bin is provided with a first air inlet, the air blower is provided with a first air outlet and a second air outlet, the first air outlet is connected with the first air inlet through a first adjusting valve, the second air outlet is connected with the atmosphere through a first pressure release valve, and the first adjusting valve is a valve capable of adjusting the opening degree of the air blower. According to the application, the controllable positive pressure barrier is established and maintained in the intermediate bin through the blower, and the double physical barrier is formed by combining the unidirectional sealing structures of the first air locking valve and the second air locking valve, so that the upstream reverse channeling of the synthetic gas in the gasification furnace along the feeding path is prevented.

Inventors

  • YANG SHAOJUN
  • HAO LILI
  • LIU SHUYUAN
  • XIA SHUANGQUAN

Assignees

  • 中科合肥煤气化技术有限公司

Dates

Publication Date
20260512
Application Date
20260212

Claims (10)

  1. 1. A biomass gasification feeding system is used for conveying biomass materials to a gasification furnace and is characterized by comprising a blower (100), a feed bin (200), a first feeder (300), a first air locking valve (400), a middle bin (500) and a second air locking valve (600), wherein the feed bin (200), the first feeder (300), the first air locking valve (400), the middle bin (500) and the second air locking valve are sequentially arranged along the forward direction of a first conveying path of the biomass materials; The discharge port of the second air locking valve (600) is used for being connected with the feed port of the gasification furnace, and the first air locking valve (400) and the second air locking valve (600) are valves which are allowed to be conducted unidirectionally along the positive direction; the intermediate bin (500) is provided with a first air inlet (501), and the first air inlet (501) is positioned in a region between a feed inlet and a discharge outlet of the intermediate bin (500); the air blower (100) is provided with a first air outlet (111) and a second air outlet (121), the first air outlet (111) is connected with the first air inlet (501) through a first regulating valve (112), the second air outlet (121) is connected with the atmosphere through a first pressure relief valve (122), and the first regulating valve (112) is a valve capable of regulating the opening degree of the air blower.
  2. 2. The biomass gasification feed system according to claim 1, further comprising a first pressure sensor (502) and a second pressure sensor (701); The first pressure sensor (502) is arranged in the intermediate bin (500), the second pressure sensor (701) is arranged in the first conveying path between the second air locking valve (600) and the gasification furnace, and the first pressure sensor (502) and the second pressure sensor (701) are both used for detecting the pressure in the corresponding area; the first regulating valve (112) is a valve capable of regulating the opening degree thereof according to the difference between the pressures detected by the first pressure sensor (502) and the second pressure sensor (701).
  3. 3. The biomass gasification feed system according to claim 2, further comprising a second feeder (700); The feed inlet of second batcher (700) with the discharge gate of second air locking valve (600) is connected, the discharge gate of second batcher (700) be used for with the feed inlet of gasifier is connected, second pressure sensor (701) are located in the first delivery path of second batcher (700).
  4. 4. A biomass gasification feed system according to claim 2 or 3, wherein said blower (100) further has a third air outlet (131); the third air outlet (131) is connected with any one of the air inlet of the storage bin (200), the air inlet of the first feeder (300) and the atmosphere through a second regulating valve (132); the second regulating valve (132) is a valve capable of increasing the opening degree thereof when the pressure value detected by the first pressure sensor (502) is greater than a preset threshold value.
  5. 5. The biomass gasification feed system according to claim 4, further comprising a dust concentration sensor; the dust concentration sensor is arranged in the first conveying path of the first feeder (300), and is used for detecting the dust concentration in the first feeder (300); The first feeder (300) is provided with a second air inlet (302) and a fourth air outlet (303), the third air outlet (131) is connected with the second air inlet (302) through the second regulating valve (132), and the second regulating valve (132) can also regulate the opening degree of the second feeder according to the dust concentration; the fourth air outlet (303) is connected with the atmospheric environment through a second pressure relief valve (304).
  6. 6. The biomass gasification feed system according to claim 5, wherein said second air inlet (302) is provided in said first feeder (300) on a side thereof adjacent to a feed inlet of said first feeder (300), and said second pressure relief valve (304) is provided in said first feeder (300) on a side thereof adjacent to a discharge outlet of said first feeder (300).
  7. 7. The biomass gasification feed system according to claim 5, further comprising a first flow sensor (113) and a second flow sensor (133); The first flow sensor (113) is arranged in a second conveying path between the first regulating valve (112) and the first air inlet (501), and the second flow sensor (133) is arranged in the second conveying path between the second regulating valve (132) and the second air inlet (302).
  8. 8. A biomass gasification feed system according to claim 3, wherein said first air lock valve (400), said intermediate bin (500) and said second air lock valve (600) are arranged in sequence along the direction of gravity.
  9. 9. A biomass gasification feed system according to claim 3, wherein said first feeder (300) and said second feeder (700) are screw feeders.
  10. 10. The biomass gasification feed system according to claim 1, wherein said blower (100) further has a third gas outlet (131), said blower (100) being capable of outputting an inert gas through said first gas outlet (111), said second gas outlet (121) and said third gas outlet (131).

Description

Biomass gasification feeding system Technical Field The application relates to the technical field of biomass energy, in particular to a biomass gasification feeding system. Background Biomass gasification feed systems typically include a silo, a feeder, and a lock air valve. In the biomass gasification process, the feeder is required to continuously convey biomass materials stored in the storage bin to the gasification furnace by means of the air locking valve so as to ensure continuous and efficient operation of the gasification process. During this time, synthesis gas will be generated in the gasifier. If the pressure of the gasifier fluctuates obviously, so that the sealing of the air locking valve is invalid, the synthesis gas can reversely flow into the biomass gasification feeding system, the continuity of the feeding process is damaged, and even the biomass materials react in advance in the conveying process. Disclosure of Invention The application provides a biomass gasification feeding system, wherein a controllable positive pressure barrier is established and maintained in an intermediate bin through a blower, and a one-way sealing structure of a first air locking valve and a second air locking valve is combined to form a double physical barrier, so that the upstream reverse channeling of synthetic gas in a gasification furnace along a feeding path is prevented. The application provides a biomass gasification feeding system which is used for conveying biomass materials to a gasification furnace and is characterized by comprising a blower, and a feed bin, a first feeder, a first air locking valve, a middle bin and a second air locking valve which are sequentially arranged along the forward direction of a first conveying path of the biomass materials and are connected end to end; The discharge port of the second air locking valve is used for being connected with the feed port of the gasification furnace, and the first air locking valve and the second air locking valve are valves which are allowed to be communicated unidirectionally along the positive direction; The intermediate bin is provided with a first air inlet which is positioned in a region between the feed inlet and the discharge outlet of the intermediate bin; The air blower is provided with a first air outlet and a second air outlet, the first air outlet is connected with the first air inlet through a first regulating valve, the second air outlet is connected with the atmospheric environment through a first pressure relief valve, and the first regulating valve is a valve capable of regulating the opening degree of the air blower. Optionally, the system further comprises a first pressure sensor and a second pressure sensor; the first pressure sensor is arranged in the middle bin, the second pressure sensor is arranged in a first conveying path between the second air locking valve and the gasification furnace, and the first pressure sensor and the second pressure sensor are both used for detecting the pressure in the corresponding area; The first regulating valve is a valve capable of regulating the opening degree of the first regulating valve according to the difference value of the pressures detected by the first pressure sensor and the second pressure sensor. Optionally, the device also comprises a second feeder; The feed inlet of second batcher is connected with the discharge gate of second air locking valve, and the discharge gate of second batcher is used for being connected with the feed inlet of gasifier, and second pressure sensor locates in the first conveying path of second batcher. Optionally, the blower further has a third air outlet; the third air outlet is connected with any one of an air inlet of the storage bin, an air inlet of the first feeder and the atmosphere through a second regulating valve; The second regulating valve is a valve capable of increasing the opening degree of the second regulating valve when the pressure value detected by the first pressure sensor is larger than a preset threshold value. Optionally, the dust concentration sensor is also included; the dust concentration sensor is arranged in the first conveying path of the first feeder and is used for detecting the dust concentration in the first feeder; the first feeder is provided with a second air inlet and a fourth air outlet, the third air outlet is connected with the second air inlet through a second regulating valve, and the second regulating valve can also regulate the opening degree of the first feeder according to the dust concentration; The fourth air outlet is connected with the atmospheric environment through a second pressure relief valve. Optionally, the second air inlet is arranged on one side of the first feeder close to the feed inlet of the first feeder, and the second pressure relief valve is arranged on one side of the first feeder close to the discharge outlet of the first feeder. Optionally, the system further comprises a first flow