SDNE TECH BIOGAS PROCESSING SYSTEM INTRODUCTION

• Why the biogas need to be processed

The biogas contains corrosive gas like H2S, and the unprocessed biogas will damage the gas genset and other biogas equipment badly. Therefore, the biogas must need desulfurization and dehydration before using.

There are three ways in biogas desulfurization; they are dry desulfurization, wet desulfurization and biology bio desulfurization. The following will be a selective analysis on dry desulfurization. 

• Dry desulfurization

Dry desulfurization is an easy operation, high efficiency and low cost way in processing the biogas, which is suitable for the situation like small biogas volume and low concentration in H2S. The basic principle of dry desulfurization is used oxygen to oxidize the H2S to sulphur or oxysulfide, also can call it dry oxidation. Dry desulfurization device has a container to store the material like activated carbon, iron oxide etc. The unprocessed biogas will go through the container in low speed from one side, and then go out from other side after oxidation. The oxysulfide will stay in the container.

Dry desulfurization mainly contains the body (steel structure), desulfurizer container, viewing window, pressure gage, thermometer etc. As usual practice, it will equip two desulfurizer towers, one is for use, and one is for standby use. These two desulfurizer towers will be used in alternation, one is for desulfurization, and one is for regeneration. The biogas contained H2S enter into the bottom of the tower first, and then go through the desulfurizer container, which will cause a chemical reaction:

Step1: Fe2O3 · H2O + 3 H2S = Fe2S3 + 4 H2O （Desulfurization）

Step 2: Fe2S3 + 3/2 O2 + 3 H2O = Fe2O3 · H2O + 2 H2O + 3 S（Regeneration）

During the chemical reaction, the biogas contained H2S will react with the heavy capacity desulfurizer from the bottom of the container, and then react with the low-load desulfurizer from the top of the container. Thanks to the well design in biogas airspeed and line speed, dry desulfurization can reach good desulfurization result

Before the biogas going into the dry desulfurizer tower, it should equip condensate water tank and particle filter, which can remove the impurities in biogas and make the biogas get wet before going into the desulfurization tower.

If the desulfurizers change color or excessive loss in pressure, it needs to change into another desulfurization tower. When all the biogas evacuate, the desulfurization tower should in natural ventilation condition for regenerating the desulfurizer. When the regeneration cannot reach the result anymore, it should remove the desulfurizer from the bottom of the tower and add same amount flesh desulfurizer in reactor.

• Biogas Processing Flowchart

Biogas Processing Equipment Selection Guideline

SDNE TECH Biogas Processing System is matched to SDNE TECH Biogas Generator Set

Focused on export for more than 10 years, and had successful cases in providing services to Asia, Africa and Latin America.

The Product Warranty Scope: The warranty terms are adapted to the Shengdong brand’s fuel/gas series generator sets and other related products used in abroad. Within the time frame in basic warranty regulations, if the product causes malfunction because of the quality problems or the manufacturing issues, the Company will provide 1 year or 1000 hours free warranty services.

Shengdong Technology New Energy Technology Co., Ltd., a gas generator sets supplier, offer power generation system for the world. Offering the best-buy gas generator sets to customer is our aim. Production base are located China’s famous manufacturing city --- Dongguan, Guangdong Province, and China\'s petroleum machinery manufacturing city – Dongying, Shangdong Province. Thanks to the regional power equipment, highly centralized petroleum machinery information, abundant technology talent and mature manufacturing environment, we have advantaged technology to research, develop and manufacture the most cost-effective power generation products in China.
Product quality is the life of company, so we adopt international technology to make generator sets and use international standard to test them. For the key component of generator set, we adopt experienced and advanced product in matching production to ensure the whole generator sets’ quality effectively. For the complete form or the matching form of product, we use highly integrated manufacturing resource and production mode to guarantee the stability and advancement of the product quality.
The appearance and structure of every generator set we produced are designed and improved by computer. At the same time, we put mass humanized element in our design, so the human-computer interface is friendly with tasteful appearance. Our strength lies in taking advantage of more than 15 years of experience in engine industry, so we can provide users a complete range of power solutions in gas, diesel oil and heavy oil.
The products and service we can offer as followed:
1. Gas Generation System Solutions
Provide a wide range of Gas-fired generation solution, which include natural gas, coal bed methane, biogas, straw gas, coke oven gas, dual fuel and other generation equipment.
2. CCHP Solutions
Using cylinder water, exhaust gas and other resources of generation to provide a complete solution for CCHP will increase the overall efficiency up to more than 70% of generator set, which can improve the economic value and reduce investment risk for users..
3. Heavy Oil / Diesel Generation System Solutions:
Provide a wide range of solution in heavy oil or diesel like machine room common used in power plant, noise processing, parallel access, equipment installation and so on.