Phone: +86 15951568878
Biogas purification technology
2017-05-041465
The principle of biogas purification is that the biogas collected from landfill, water treatment or other anaerobic fermentation systems first passes through the filter separator to preliminarily separate out the water and physical impurities, then passes through the desulfurization system to remove most of the hydrogen sulfide, and enters into the chemical absorption tower after pressurization. Under the specific reaction conditions and chemical solutions, the biogas will absorb various impurity gases and solid matters mainly composed of carbon dioxide It can make the methane content in the gas reach about 90%, or even higher as needed. Finally, after cooling and separating the water under a certain pressure, it can make the water content in the gas reach about 0.6%. It can completely replace the high-quality natural gas for power generation, civil use, vehicle use and other occasions.
The biogas produced in the anaerobic fermentation process contains about 55% CH4 and 45% CO2, as well as a small amount of H2S, H2O and other gas components. Through separation and purification, CH4 concentration can be increased to more than 95%, and the product gas meeting the relevant national natural gas standards can be prepared. The separation and purification system of biogas filtration equipment is divided into two parts: pretreatment and membrane separation. The pretreatment part includes multi-stage filter, cold dryer, heat exchanger, etc., which can filter the solid impurities in the biogas to 0.01 μ m away from the dew point, and adjust the gas to the appropriate temperature for the operation of the membrane separation equipment; the membrane separation part uses the different dissolution and diffusion rates of various gas components in the polymer membrane, so under the effect of the differential pressure on both sides of the membrane, the gas components permeate The separation of specific gas components can be realized by the different rate through the fiber membrane wall.
In biogas, H2S, CO2, etc. are "fast gas", separated through the membrane, and CH4 is "slow gas", which is collected as product gas. The membrane separation equipment of Lide company adopts the combination of multi-stage membrane blocks with high separation coefficient to improve the recovery rate and purity of product gas and reduce the loss.
On May 2, it was reported that Dalian Lide Gas Technology Co., Ltd. successfully won the bid for the biogas purification equipment project of Xiangcun High Tech Agriculture Co., Ltd. in April, and signed a supply contract with the purchaser. This set of equipment can purify 5000nm3 biogas per day, and the methane concentration of product gas is 97%. All indexes meet the national natural gas class II standard, and the outlet pressure is 25MPa, which can be used as compressed natural gas for vehicles. The winning of the project shows that the membrane biogas purification technology has good cost performance, and it is also the recognition of the technical strength of Lide gas.
According to the 2016 annual report released recently by Lide gas, during the reporting period, the revenue was 36.2057 million yuan, down 16.92% from the same period of last year; the net profit attributable to the shareholders of the listed company was 6.7841 million yuan, up 3.94% from the same period of last year; the basic earnings per share was 0.22 yuan, up 10.00% from the same period of last year.
As of December 31, 2016, Lide gas assets totaled 70.1867 million yuan, down 18.35% compared with the end of last year; the asset liability ratio was 17.53%, down 4.64 percentage points compared with 22.17% at the end of last year. The net cash flow from operating activities was 3.6441 million yuan in the current period, compared with 2.7585 million yuan in the same period last year.
The main reason for the decrease in 2016's operating revenue of Lide gas is that the company's main revenue during the reporting period is from sales of products, and the revenue from maintenance is at the cyclical bottom; the secondary reason is that the company's main product nitrogen generator is not delivered within the reporting period due to technical upgrading and technical transformation factors, and is not included in the current revenue according to the accrual basis principle.
Products center
Contact Us
In the oil, Sinopec, CNOOC, Sinochem Group, a non-standard equipment suppliers.
Brand-name products in Jiangsu," "National Customer Satisfaction Brand" and the honorary title of the winner.
Brand-name products in Jiangsu," "National Customer Satisfaction Brand" and the honorary title of the winner.
- E-mail：unite@unitefilter.com
- Address：No. 24 all the way,industrial park,new area,Wuxi
Copyright © 2018 Jiangsu Unite Filtration Equipment Co., Ltd. All rights reserved. 苏ICP备16037675号