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A low energy consumption multi-tower vpsa oxygen production process

A technology with low energy consumption and craftsmanship, applied in the field of industrial oxygen production, it can solve the problems of unsolved product gas flow rate, large equipment footprint, and high operating noise, achieving stable and continuous adsorption and analysis, stable product airflow, and reduced noise decibels. Effect

Active Publication Date: 2018-10-19
CHENGDU HUAXITANG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of the same product demand, the four-tower VPSA oxygen production system is more energy-efficient than the two-tower system used in parallel, but since the adsorption towers in the same group still share a blower or vacuum pump, there is no solution. The situation where the flow rate of the product gas sent fluctuates with the pressure instability
[0005] 3) For the power equipment of the existing VPSA oxygen generation system, the air blower is mainly used to pressurize the air, and the vacuum pump is used to analyze and vent the adsorbent. In the existing technology, these two power equipment are often set independently, respectively. The motor drives its operation, which has defects such as high energy consumption of the system, large equipment footprint, and high operating noise.

Method used

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  • A low energy consumption multi-tower vpsa oxygen production process
  • A low energy consumption multi-tower vpsa oxygen production process

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Experimental program
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Effect test

Embodiment 1

[0020] This embodiment proposes a low-energy multi-tower VPSA oxygen production process, which includes at least two sets of parallel adsorption towers. Each adsorption tower group consists of two parallel adsorption towers. The oxygen production process is performed in each group of adsorption towers. Inside, when the adsorption of any adsorption tower is controlled, the other adsorption tower completes the desorption cycle adsorption process. The gas obtained after the adsorption tower completes the adsorption is sent out through the buffer tank.

[0021] This embodiment adopts two groups of adsorption towers, namely 1# adsorption tower group and 2# adsorption tower group. 1# adsorption tower group includes adsorption tower A and adsorption tower B arranged in parallel, and 2# adsorption tower group includes parallel adsorption towers. Tower C, adsorption tower D; 1# adsorption tower group and 2# adsorption tower group are equipped with blowers and vacuum pumps, through the blo...

Embodiment 2

[0024] This embodiment proposes a low-energy multi-tower VPSA oxygen production process. This embodiment can realize the interaction of adsorption and desorption between any adsorption towers. The structure is based on embodiment 1 and adds the following structure: set at least two groups Power equipment. Each group of power equipment includes a blower, a motor and a vacuum pump. In every two groups of adsorption towers, there are connecting pipes between the pipes connecting the blower and the two adsorption towers, and between the pipes connecting the vacuum pump and the two adsorption towers. , The connecting pipeline is equipped with a valve, which can realize that when the adsorption tower is adsorbed, the blower in each group of power equipment is staggered to complete the adsorption tower; when the adsorption tower is resolved, the vacuum pump in each group of power equipment is staggered to complete the adsorption Analysis of adsorption tower. In each adsorption tower g...

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Abstract

The invention discloses a low-energy-consumption multi-tower VPSA oxygen generating process. At least two parallel absorption tower sets are arranged, and each adsorption tower set is composed of two parallel absorption towers. According to the oxygen generating process, in each adsorption tower set, the cyclic adsorption process that during adsorption of any one of the adsorption towers, the other adsorption tower completes analysis is controlled. Interaction of the adsorption and analysis processes of the two parallel adsorption towers in each adsorption tower set can be achieved, in other words, in each adsorption tower set, one adsorption tower can carry out adsorption, the other adsorption tower can achieve analysis at the same time, stable and continuous operation of adsorption and analysis is promoted, and product airflow is stable.

Description

Technical field [0001] The invention is a low-energy multi-tower VPSA oxygen production process, and specifically relates to an oxygen production process that can reduce energy consumption realized by adopting a four-tower VPSA oxygen production system, and belongs to the technical field of industrial oxygen production. Background technique [0002] VPSA oxygen production technology is an oxygen production system with pressurized adsorption and vacuum analysis. Under the condition of penetrating atmospheric pressure, special molecular sieve for oxygen production is used to selectively adsorb nitrogen in the air and alumina molecular sieve is used to adsorb impurities such as moisture in the air. The air is blown into the adsorption tower by a blower, and the adsorbed oxygen is sent out of the system in a low pressure state, and the molecular sieve adsorbent in the tower is then vacuum analyzed by a vacuum pump and recycled. In the existing process production, the following situat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B13/02
CPCC01B13/0259C01B2210/0014
Inventor 马光俊苏为民王林宋筱露董静官正宇
Owner CHENGDU HUAXITANG ENVIRONMENTAL PROTECTION TECH CO LTD