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Molecular sieve adsorption energy-saving system

An energy-saving system and molecular sieve technology, applied in separation methods, dispersed particle separation, gas treatment, etc., can solve the problem of large steam consumption of molecular sieve adsorption devices, and achieve the effect of saving steam

Pending Publication Date: 2021-12-10
恒力石化(大连)炼化有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to the technical problem of the large steam consumption of the molecular sieve adsorption device in the existing refining and chemical integration project proposed above, a molecular sieve adsorption energy-saving system is provided

Method used

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  • Molecular sieve adsorption energy-saving system

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Embodiment 1

[0024] like figure 1 As shown, the present invention provides a molecular sieve adsorption energy-saving system, comprising sequentially connected preheaters, two steam heaters operating in parallel, and a molecular sieve adsorber;

[0025] The steam heater includes a regeneration gas inlet, a regeneration gas outlet, a steam inlet and a steam outlet; the preheater includes a gas side inlet, a gas side outlet, a water side inlet and a water side outlet, and the gas side outlet is connected to the The regeneration gas inlet of the steam heater, the regeneration gas outlet of the steam heater is connected to the molecular sieve adsorber;

[0026] The regenerated dirty nitrogen gas is first passed into the pre-heater to be heated by low-temperature hot water, then passed into the steam heater to be heated by steam, and finally passed into the molecular sieve adsorber for exothermic analysis and then emptied.

[0027] Further, the low-temperature hot water is passed into the pre-...

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Abstract

The invention provides a molecular sieve adsorption energy-saving system. The system comprises a preheater, two steam heaters running in parallel and a molecular sieve adsorber which are connected in sequence; the steam heater comprises a regenerated gas inlet, a regenerated gas outlet, a steam inlet and a steam outlet; the preheater comprises a gas side inlet, a gas side outlet, a water side inlet and a water side outlet, the gas side outlet is connected to a regenerated gas inlet of the steam heater, and a regenerated gas outlet of the steam heater is connected to the molecular sieve adsorber; and regenerated waste nitrogen is firstly introduced into the preheater to be heated by low-temperature hot water, then is introduced into the steam heater to be heated by steam, and finally is introduced into the molecular sieve adsorber to be subjected to heat release analysis and then is emptied. According to the technical scheme, steam consumption of the molecular sieve adsorption device can be reduced.

Description

technical field [0001] The invention relates to the technical field of molecular sieve adsorption in coal chemical industry, in particular to a molecular sieve adsorption energy-saving system. Background technique [0002] The molecular sieve adsorption device plays a key role in air purification. It uses the selective adsorption characteristics of the adsorbent to continuously separate the moisture and CO in the raw air by using the temperature swing adsorption method. 2 , hydrocarbons and other harmful components, when the temperature is low (about 15°C), the adsorption capacity of the molecular sieve is large, and the adsorption capacity is small at high temperature. By periodically changing the bed temperature, the water content of the raw material air can be continuously separated CO 2 and other harmful ingredients. The desorption regeneration of the adsorbent is an endothermic process. The regeneration gas is heated to 213°C by a steam heater, and then the adsorbed CO...

Claims

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Application Information

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IPC IPC(8): B01D53/04
CPCB01D53/0462B01D53/0454B01D2253/108B01D2259/4009
Inventor 孔祥玉许锦赵爽叶芳礼
Owner 恒力石化(大连)炼化有限公司
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