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CN-122015092-A - Hydrogen-ammonia mixed low-nitrogen emission combustor

CN122015092ACN 122015092 ACN122015092 ACN 122015092ACN-122015092-A

Abstract

The invention relates to the technical field of boiler combustors, in particular to a hydrogen-ammonia mixed low-nitrogen emission combustor which comprises a gas transmission assembly, a gas mixing assembly and a combustion assembly, wherein the gas transmission assembly comprises a tank body, two gas inlet pipes are respectively arranged at two sides of the tank body, the gas mixing assembly is arranged in the tank body and comprises a gas mixing cylinder, a plurality of dry mixing plates are arranged on the inner wall of the gas mixing cylinder, the diameter of a first end part of the gas mixing cylinder is larger than that of a second end part of the gas mixing cylinder, the two gas inlet pipes are respectively arranged at one side close to the first end part of the gas mixing cylinder, the combustion assembly is arranged at the outer side of the tank body, and a nozzle is arranged between the cover body and the second end part of the gas mixing cylinder. In the invention, the two air inlet pipes are respectively arranged on the side walls of the two sides of the tank body, so that the length in the horizontal direction is shortened, and the occupied space is smaller, thereby being suitable for a narrow space near an industrial boiler and ensuring that the invention can be installed in place.

Inventors

  • QI JIANHUA
  • HOU QIANG
  • PAN HONGGANG
  • YANG SHUO
  • WANG YONG
  • LI KEWANG
  • SHI HAILONG
  • FU YUDONG
  • GAO SHAN
  • XU YOUNING
  • CUI JIE
  • MA RUI
  • CUI DAJUN
  • DAI ZHIJIE
  • WANG HAONAN
  • LIANG JIAHAO

Assignees

  • 辽阳国成热电有限公司
  • 沈阳工程学院
  • 沈阳氢洁能源科技有限公司

Dates

Publication Date
20260512
Application Date
20260320

Claims (8)

  1. 1. A hydrogen-ammonia hybrid low nitrogen emission combustor, comprising: The gas transmission assembly comprises a tank body, and two sides of the tank body are respectively provided with a gas inlet pipe; the gas mixing assembly is arranged in the tank body and comprises a gas mixing cylinder, a plurality of gas mixing plates are arranged on the inner wall of the gas mixing cylinder, the diameter of the first end part of the gas mixing cylinder is larger than that of the second end part, and two gas inlet pipes are arranged on one side close to the first end part of the gas mixing cylinder; The combustion assembly is arranged on the outer side of the tank body and comprises a cover body, and a nozzle is arranged between the cover body and the second end part of the gas mixing cylinder.
  2. 2. The burner of claim 1, wherein the first end of the gas cylinder is provided with an expansion part, the expansion part is rotatably connected with the inner wall of the tank, the outer surface of the expansion part is provided with a first groove and a second groove, the two air inlet pipes are respectively corresponding to the positions of the first groove and the second groove, the first groove is communicated with the first gas transmission channel, and the second groove is communicated with the second gas transmission channel.
  3. 3. The hydrogen-ammonia mixed low-nitrogen emission burner according to claim 2, wherein the first grooves and the second grooves are all provided with a plurality of grooves, the first grooves and the second grooves are arranged in a staggered manner, and one-way valves are arranged in the first gas transmission channel and the second gas transmission channel.
  4. 4. The hydrogen-ammonia mixed low nitrogen emission burner of claim 3, wherein the tops of two adjacent first grooves are in communication via a first gas distribution groove and the tops of two adjacent second grooves are in communication via a second gas distribution groove.
  5. 5. The hydrogen-ammonia mixed low nitrogen emission burner of claim 4, wherein the first gas delivery channel is disposed at a bottom of the first groove, the second gas delivery channel is disposed at a bottom of the second groove, the first groove and the second groove have the same depth, the first gas distribution groove and the second gas distribution groove have the same depth, and the first gas distribution groove has a depth smaller than the first groove.
  6. 6. The hydrogen-ammonia mixed low-nitrogen emission burner according to claim 4, wherein stress plates are fixedly arranged in the first groove and the second groove, the widths of the first gas distribution groove and the second gas distribution groove are the same, the width of the stress plates is smaller than that of the first gas distribution groove, and a gap exists between the stress plates and the inner wall of the tank body.
  7. 7. The hydrogen-ammonia mixed low nitrogen emission burner of claim 3, further comprising an air guide assembly disposed within said tank and located on a side of said gas mixing cylinder remote from said combustion assembly, said air guide assembly comprising: the gas blocking ring is fixedly arranged on the side wall of the expansion part, and the central axis of the gas blocking ring is collinear with the central axis of the gas mixing cylinder; The limiting piece is fixedly arranged on the inner wall of the tank body, an air guide cavity is formed in the edge of the limiting piece, facing one side of the air mixing cylinder, of the limiting piece, the air blocking ring stretches into the air guide cavity, and the first air conveying channel, the second air conveying channel and the inner part of the air mixing cylinder are communicated with the air guide cavity.
  8. 8. The hydrogen-ammonia mixed low-nitrogen emission burner according to claim 7, wherein a supporting rod is arranged at the center of the limiting piece, a plurality of static plates are fixedly arranged on the side wall of the supporting rod, and a plurality of gas mixing plates and a plurality of static plates are arranged in a staggered mode.

Description

Hydrogen-ammonia mixed low-nitrogen emission combustor Technical Field The invention relates to the technical field of boiler combustors, in particular to a hydrogen-ammonia mixed low-nitrogen emission combustor. Background The burner is an important device above an industrial boiler, hydrogen and ammonia can be used in the boiler field, only water is produced by hydrogen combustion, no carbon dioxide is produced by ammonia combustion, and the raw materials are widely available and can be produced in a green way. The addition of ammonia can effectively reduce the combustion temperature, and in order to avoid the generation of nitrogen oxides in a large amount at an excessively high temperature during the combustion of hydrogen and ammonia, the hydrogen and the ammonia need to be premixed before the combustion. In the device, a hydrogen inlet pipe and an ammonia inlet pipe can convey hydrogen and ammonia, a conical collecting cover is arranged in a first tank body, and the hydrogen and the ammonia are concentrated in the process of passing through the first tank body, so that premixing is realized. The device has the defects that two air inlet pipes are arranged on the end face of one side, far away from the cover body, of the second tank body, so that the device is longer in the horizontal direction and occupies a larger space. In the actual use process, once the space near the industrial boiler is relatively narrow, the device cannot be correctly installed in place. Disclosure of Invention The invention aims to provide a hydrogen-ammonia mixed low-nitrogen emission burner, wherein two air inlet pipes are respectively arranged on the side walls of two sides of a tank body, so that the length in the horizontal direction is shortened, and the occupied space is smaller, thereby being suitable for a narrow space near an industrial boiler and ensuring that the burner can be installed in place. The technical scheme includes that the hydrogen-ammonia mixing low-nitrogen emission combustor comprises a gas transmission assembly, a gas mixing assembly and a combustion assembly, wherein the gas transmission assembly comprises a tank body, two gas inlet pipes are respectively arranged on two sides of the tank body, the gas mixing assembly is arranged in the tank body and comprises a gas mixing cylinder, a dry mixing gas plate is arranged on the inner wall of the gas mixing cylinder, the diameter of a first end part of the gas mixing cylinder is larger than that of a second end part of the gas mixing cylinder, the two gas inlet pipes are respectively arranged on one side close to the first end part of the gas mixing cylinder, the combustion assembly is arranged on the outer side of the tank body and comprises a cover body, and a nozzle is arranged between the cover body and the second end part of the gas mixing cylinder. Preferably, the first end of the gas mixing cylinder is provided with an expansion part, the expansion part is rotationally connected with the inner wall of the cylinder body, the outer surface of the expansion part is provided with a first groove and a second groove, the two gas inlet pipes are respectively corresponding to the positions of the first groove and the second groove, the first groove is communicated with the first gas transmission channel, and the second groove is communicated with the second gas transmission channel. Preferably, the first grooves and the second grooves are all provided with a plurality of grooves, the first grooves and the second grooves are arranged in a staggered mode, and the first gas transmission channels and the second gas transmission channels are internally provided with one-way valves. Preferably, the tops of two adjacent first grooves are communicated through a first air dividing groove, and the tops of two adjacent second grooves are communicated through a second air dividing groove. Preferably, the first gas transmission channel is arranged at the bottom of the first groove, the second gas transmission channel is arranged at the bottom of the second groove, the depths of the first groove and the second groove are the same, the depths of the first gas distribution groove and the second gas distribution groove are the same, and the depth of the first gas distribution groove is smaller than that of the first groove. Preferably, the first groove and the second groove are internally and fixedly provided with stress plates, the widths of the first air distribution groove and the second air distribution groove are the same, the width of the stress plates is smaller than that of the first air distribution groove, and a gap exists between the stress plates and the inner wall of the tank body. Preferably, the gas-mixing tank further comprises a gas guide assembly, the gas guide assembly is arranged in the tank body and is positioned on one side of the gas mixing tank away from the combustion assembly, the gas guide assembly comprises a gas blocking ring which is fixedly