New utilization technology of shift gas heat in hydrogen production device
A hydrogen production device and a new process technology, applied in the direction of hydrogen production, etc., can solve the problems of hydrogen products cannot be transported, large pressure drop, impact, etc.
Active Publication Date: 2013-03-06
SHANGHAI YOUHUA PROCESS INTEGRATED TECH CO LTD +1
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Problems solved by technology
There is a problem in this heat combination method, that is, when the distance between the hydrogen production device and other devices is relatively long, the long-distance transmission of medium-transformation gas will cause a large pressure drop, which will affect the subsequent PSA purification device, and the hydrogen product cannot be transported to the hydrogen pipe. network
It can be seen that this heat combination method cannot be widely used due to the limitation of the distance between devices.
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[0013] The present invention will be further described now in conjunction with accompanying drawing.
[0014] see figure 1 , the present invention proposes a new process that is not limited by the distance between the variable gas in the hydrogen production device and the heat sink, that is, a process in which the heat trap fluid is transported to the hydrogen production device and exchanges heat with the gas change in the hydrogen production device. Hot traps include but are not limited to the lean amine solution of the desulfurization unit, and also include various solutions and oil products with a temperature below 180°C. Now take the combination of lean amine liquid and variable gas heat in the hydrogen production unit as an example to illustrate the specific flow of the process. The process includes lean amine liquid pump, solvent regeneration tower, medium gas-lean amine liquid heat exchanger, lean amine liquid reboiler and lean liquid pump. Among them, the medium-chan...
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The invention relates to the field of petrifaction energy conservation, and particularly relates to a new utilization technology of shift gas heat in a hydrogen production device. The technology comprises a lean amine liquid pump, a solvent regeneration tower, a medium temperature shift gas-lean amine liquid heat exchanger, a lean amine liquid reboiler and a lean liquid pump. Compared with the prior art, the invention provides a technological flow of transporting the lean amine liquid easy to transport for long distance into the hydrogen generation device and performing heat exchange with the medium temperature shift gas, the problem that the medium temperature shift gas cannot be transported for long distance is solved, and the heat integration mode between the medium temperature shift gas in hydrogen production and the hot traps such as lean amine liquid and the like is widely applied.
Description
technical field [0001] The invention relates to the field of petrochemical energy saving, in particular to a new process for utilizing the heat of changing gas in a hydrogen production device. Background technique [0002] With the deterioration of crude oil and the upgrading of oil quality, refineries have an increasing demand for hydrogen. The hydrogen production device is one of the main devices for producing hydrogen, and it is also the main energy-consuming device. The reasonable and full utilization of the gas conversion heat in the hydrogen production unit is one of the important factors affecting the energy consumption of the hydrogen production unit and oil refining. At present, after heat exchange with raw gas for hydrogen production, boiler feed water, demineralized water, etc., the temperature of the transformed gas in most hydrogen production units is still as high as 140°C to 160°C when it enters the air cooler, and the waste heat is not further recycled. Thr...
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IPC IPC(8): C01B3/02
Inventor 孙虎良余金森朱世杰唐宏亮
Owner SHANGHAI YOUHUA PROCESS INTEGRATED TECH CO LTD