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CN-224207985-U - Natural gas hydrogen reforming system

CN224207985UCN 224207985 UCN224207985 UCN 224207985UCN-224207985-U

Abstract

The utility model discloses a natural gas reforming hydrogen system which comprises a desulfurizing tower, a steam mixer, a preheater, a reforming reactor, a water vapor shift tower, a cooling tower, a gas-liquid separator, a carbon dioxide absorption tower and an adsorption tower which are sequentially connected through a gas transmission pipeline, wherein a booster pump, a pressure control valve and an emergency cut-off valve are arranged on the gas transmission pipeline at the upstream of the desulfurizing tower, a regulating valve is arranged between the desulfurizing tower and the steam mixer, a temperature control valve and a high-temperature switching valve are arranged between the reforming reactor and the water vapor shift tower, a purified gas control valve is arranged between the carbon dioxide absorption tower and the adsorption tower, a product hydrogen outlet valve is arranged at the downstream of the adsorption tower, and the natural gas reforming hydrogen system further comprises a carbon dioxide trapping pipeline connected with the carbon dioxide absorption tower, wherein the carbon dioxide trapping pipeline is provided with a regenerating tower and a carbon dioxide compressor, and one end of the carbon dioxide trapping pipeline is connected with a liquid carbon dioxide storage tank. The system is simple and reasonable in whole, relatively low in production cost, capable of achieving carbon capture and environment-friendly.

Inventors

  • YANG MINGMING
  • OUYANG ZI
  • Cui Chaochan
  • WANG LEI
  • WANG FENGSHOU
  • PAN ZHAO
  • HOU XIAOJUN
  • PENG ENZE
  • JIANG FENG

Assignees

  • 中广核美能企业管理(深圳)有限公司

Dates

Publication Date
20260508
Application Date
20250418

Claims (10)

  1. 1. The natural gas reforming hydrogen system is characterized by comprising a desulfurizing tower (11), a steam mixer (12), a preheater (13), a reforming reactor (14), a steam-converting tower (15), a cooling tower (16), a gas-liquid separator (17), a carbon dioxide absorbing tower (18) and an adsorption tower (19), wherein the desulfurizing tower (10) is sequentially connected through a gas pipeline (10), the gas pipeline (10) at the upstream of the desulfurizing tower (11) is provided with a booster pump (110), a pressure control valve (111) and an emergency cut-off valve (112), the booster pump (110) is connected with a natural gas source, the gas pipeline (10) between the desulfurizing tower (11) and the steam mixer (12) is provided with a regulating valve (113), the gas pipeline (10) between the reforming reactor (14) and the steam-converting tower (15) is provided with a temperature control valve (114) and a high-temperature switching valve (115), the gas pipeline (10) between the carbon dioxide absorbing tower (18) and the adsorption tower (19) is provided with a purifying gas control valve (116), and the gas pipeline (10) at the downstream of the adsorption tower (19) is provided with a hydrogen gas pipeline (10) outlet of the product; The natural gas reforming hydrogen system further comprises a carbon dioxide collecting pipeline (20) connected with the carbon dioxide absorbing tower (18), the carbon dioxide collecting pipeline (20) is provided with a regeneration tower (21) and a carbon dioxide compressor (22), and one end, far away from the carbon dioxide absorbing tower (18), of the carbon dioxide collecting pipeline (20) is connected with a liquid carbon dioxide storage tank (23).
  2. 2. A natural gas reforming hydrogen system as defined in claim 1, characterized in that a portion of the carbon dioxide capturing pipe (20) located between the carbon dioxide absorbing tower (18) and the regenerating tower (21) is provided with a lean liquid adjusting valve (24).
  3. 3. A natural gas reforming hydrogen system as defined in claim 1, characterized in that the portion of the carbon dioxide capturing conduit (20) located between the regeneration tower (21) and the carbon dioxide compressor (22) is provided with a steam regulating valve (25).
  4. 4. A natural gas reforming hydrogen system as defined in claim 1, characterized in that the portion of the carbon dioxide capturing conduit (20) located between the carbon dioxide compressor (22) and the liquid carbon dioxide storage tank (23) is provided with a pressure relief valve (26).
  5. 5. A natural gas reforming hydrogen system as defined in claim 1, further comprising a drain pipe (30) connected to the gas-liquid separator (17), wherein a liquid level control valve (31) and a condensate pump (32) are provided on the drain pipe (30).
  6. 6. A natural gas reforming hydrogen system as defined in claim 5, wherein a liquid storage tank is connected to an end of the liquid discharge pipe (30) remote from the gas-liquid separator (17).
  7. 7. The natural gas reforming hydrogen system as defined in claim 1, further comprising a buffer tank (118) connected to the product hydrogen outlet valve (117).
  8. 8. A natural gas reforming hydrogen system as defined in claim 7, further comprising a number of fuel cell devices (40) connected to the buffer tank.
  9. 9. A natural gas reforming hydrogen system as defined in claim 1, characterized in that the adsorption column (19) is a PSA adsorption column.
  10. 10. A natural gas reforming hydrogen system as defined in claim 1, characterized in that a pressure gauge is provided between the adsorption tower (19) and the product hydrogen outlet valve (117).

Description

Natural gas hydrogen reforming system Technical Field The utility model relates to a natural gas reforming hydrogen technology, in particular to a natural gas reforming hydrogen system. Background Hydrogen energy is widely concerned due to its high efficiency and environmental protection. The natural gas reforming hydrogen production technology is one of the current mature hydrogen production modes because the raw materials are easy to obtain, but the whole system of the natural gas reforming hydrogen production technology in the related technology is complex, has higher cost, can not process carbon dioxide generated in the natural gas reforming hydrogen production process, and is not environment-friendly. Disclosure of utility model The utility model aims to provide a natural gas reforming hydrogen system. The technical scheme includes that the natural gas reforming hydrogen system comprises a desulfurizing tower, a steam mixer, a preheater, a reforming reactor, a water vapor conversion tower, a cooling tower, a gas-liquid separator, a carbon dioxide absorption tower and an adsorption tower which are sequentially connected through a gas transmission pipeline, wherein a booster pump, a pressure control valve and an emergency cut-off valve are arranged on the gas transmission pipeline at the upstream of the desulfurizing tower, the booster pump is connected with a natural gas source, a regulating valve is arranged on the gas transmission pipeline between the desulfurizing tower and the steam mixer, a temperature control valve and a high-temperature switching valve are arranged on the gas transmission pipeline between the reforming reactor and the water vapor conversion tower, a purified gas control valve is arranged on the gas transmission pipeline between the carbon dioxide absorption tower and the adsorption tower, and a product hydrogen outlet valve is arranged on the gas transmission pipeline at the downstream of the adsorption tower; The natural gas reforming hydrogen system further comprises a carbon dioxide collecting pipeline connected with the carbon dioxide absorbing tower, the carbon dioxide collecting pipeline is provided with a regeneration tower and a carbon dioxide compressor, and one end, far away from the carbon dioxide absorbing tower, of the carbon dioxide collecting pipeline is connected with a liquid carbon dioxide storage tank. In some embodiments, a portion of the carbon dioxide capture conduit between the carbon dioxide absorber and the regeneration tower is provided with a lean liquid regulating valve. In some embodiments, a portion of the carbon dioxide capture conduit between the regeneration tower and the carbon dioxide compressor is provided with a steam regulating valve. In some embodiments, a portion of the carbon dioxide capture conduit between the carbon dioxide compressor and the liquid carbon dioxide storage tank is provided with a pressure relief valve. In some embodiments, the natural gas reforming hydrogen system further comprises a liquid discharge pipeline connected with the gas-liquid separator, and a liquid level control valve and a condensate pump are arranged on the liquid discharge pipeline. In some embodiments, a liquid storage tank is connected to one end of the liquid discharge pipe away from the gas-liquid separator. In some embodiments, the natural gas reforming hydrogen system further comprises a buffer tank connected to the product hydrogen outlet valve. In some embodiments, the natural gas reforming hydrogen system further comprises a number of fuel cell devices coupled to the buffer tank. In some embodiments, the adsorption column is a PSA adsorption column. In some embodiments, a pressure gauge is disposed between the adsorption column and the product hydrogen outlet valve. The implementation of the utility model has the advantages that the whole natural gas reforming hydrogen system is simple and reasonable, the hydrogen production efficiency is high, the production cost is relatively low, the carbon capture can be realized, the clean and efficient energy utilization can be realized, and the environment is protected. Drawings In order to more clearly illustrate the technical solution of the present utility model, the following description will be given with reference to the accompanying drawings and examples, it being understood that the following drawings only illustrate some examples of the present utility model and should not be construed as limiting the scope, and that other related drawings can be obtained from these drawings by those skilled in the art without the inventive effort. In the accompanying drawings: Fig. 1 is a schematic diagram of a natural gas reforming hydrogen system in accordance with some embodiments of the utility model. Detailed Description For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with refe