What is sludge incinerator?

Release date: December 29, 2016 reading times: 32

1.What is sludge incineration:

Sludge incineration is a process of sludge treatment.It uses an incinerator to heat and dry the dewatered sludge, and then oxidizes the organic matter in the sludge at high temperature to make the sludge become a small amount of ash.

A reduction, stabilization and harmless treatment method of sludge post-treatment.This method can completely remove water and organic matter from sludge and kill pathogens.

2.What are the methods of sludge burning?

There are two methods of sludge incineration: complete combustion and incomplete combustion.

A. The complete combustion method can remove all the water and organic matter in the sludge, kill all the pathogens, and reduce the sludge volume to the maximum extent.

There are many types of incineration devices, such as vertical multistage incinerator, rotary drum incinerator, fluidized incinerator and spray incinerator.At present, vertical multistage incinerator is widely used.The furnace is divided into 4-12 stages along the vertical direction, and each stage is equipped with horizontal round plates as a multi-layer furnace bed. There are stirring blades above the furnace bed that can rotate for 0.5-4 weeks per minute.The sludge is put in from the top of the furnace, on the upper bed surface, and then it falls on the next bed surface after being stirred by the mixing blade.Generally, the temperature of the upper furnace is about 300-550 ℃, and the sludge is further dehydrated and dried; then it is burned in the middle part of the furnace at 750-1000 ℃; the temperature of the bottom furnace is about 220-330 ℃, and it is cooled by air.The gas produced by combustion enters the gas purifier for purification to prevent air pollution.This kind of incinerator is mostly installed in sewage treatment plants in big cities.

High temperature decomposition method has been developed in recent years.When the sludge is heated to 370-870 ℃ under the condition of anoxia, the organic matter will be decomposed into gaseous matter, oily liquid matter and residue.The gaseous substances include methane, carbon monoxide, carbon dioxide and hydrogen, the liquid substances include acetic acid compounds and methanol, and the solid residue finally becomes the ash with carbon content of 2-15%.The decomposition time is about 25 minutes.

B. Incomplete combustion method

Using the property that organic impurities in water can be oxidized under high pressure and high temperature, the organic substances in sludge can be removed under suitable conditions in the plant, which is also called wet oxidation and wet combustion.This method is not only suitable for the treatment of sludge containing a lot of organic matters, but also suitable for the treatment of high concentration organic wastewater.

The sludge without drying contains a lot of water, the temperature can only rise to 100 ℃ under normal pressure, and the temperature required for oxidation can be obtained by pressurization, which can reduce the oxidation temperature of organic matter.For example, when the pressure is about 100 kgf / cm2 and the temperature is 250-300 ℃ for one hour, the removal rate of COD and insoluble volatile solids is 70-80% and 80-90% respectively.

The advantages of this method are that it can effectively treat wet sludge or high concentration organic wastewater without sludge dewatering and other processes, with low heat consumption; after treatment, sludge residue has good dewatering performance, and can be vacuum filtered without coagulant, and the moisture content of the filter residue is only about 50%; because the treatment is carried out in a closed container, basically no odor, dust and soot are generated;The pathogens in the treated residues have been killed; the separated water is easy to be biologically treated.

The residual ash after incineration can be reused as resources.If it still contains toxic substances such as heavy metal ions, the final treatment shall be carried out to cure and bury deeply.

3.What are the sludge incinerator manufacturers?

Hefei risine Technology Co., Ltd(www.risine. Com) is a national high-tech enterprise specialized in R & D, production and technical services of high-temperature heat treatment equipment.Founded in 1998, the company has nearly 1000 square meters of high-grade business office buildings, 30 mu of 10000 square meters of modern standard factory buildings, equipped with professional tooling and testing equipment and personnel.The company has set up an enterprise technology R & D center with a professional R & D team of senior middle-aged and young people. It also cooperates with the University of science and technology of China, Beijing University of chemical technology and Hefei University of technology in production, learning and research to jointly establish "graduate training practice base" and "new production, learning and research experiment base" and become its designated experimental practice base. 

At present, the company has set up two business departments, i.e. special equipment for carbon materials and special furnace series for advanced ceramics, and has gradually formed several process series, such as new materials, electronic ceramics, thick film circuit, packaging, magnetic materials, PTC, nano powder, zinc oxide valve, etc. thousands of equipment have been applied in new materials, electronics, chemical industry, building materials, metallurgy and other industries in many colleges and universities at home and abroadThe production lines and processes of pre oxidation, carbonization, drying, rubber discharging, curing, pre burning, burning, welding, packaging, heat treatment, ceramic metallization, etc.

Gather the new achievements of the day and prosper the national industry.Since its establishment, Hefei risine Technology Co., Ltd. has determined the business strategy of relying on technological innovation to open up market space, taking "to provide first-class solutions for thermal energy technology engineering" as its mission.Over the years, based on the analysis of a large number of imported equipment, the R & D team of the enterprise has successfully developed a variety of special heat treatment equipment from room temperature to 2000 ℃ according to the current situation of domestic raw materials and different requirements of the industry.Including the special equipment used in the development of high-performance fiber materials, such as preoxidation furnace, carbonization furnace, thermal amination furnace, automobile exhaust gas purification, etc., its key technical indicators have filled in the technical gaps in related fields in China, and has obtained a number of national invention patents.The competitive advantage of the industry is obvious, the operation condition is good, and the development prospect of the enterprise is broad.

 The company is a national high-tech enterprise, a small and medium-sized enterprise innovation fund project undertaker of the Ministry of science and technology of the people's Republic of China, a major new product project undertaker of Anhui Province, an intellectual property demonstration enterprise of Hefei City, and an innovative pilot enterprise of Hefei city. It has won the 2013 Hefei Science and technology progress award, passed the ISO9001 quality management system certification, owned the trademark registration right of the enterprise, and self operated in and out of the enterpriseIt has applied for more than 50 national invention patents and has authorized nearly 30 patent certificates. 

 In the future, Hefei risine Technology Co., Ltd. will further rely on team building, take scientific and technological innovation as the basis, establish production base of special equipment production line for high-performance carbon fiber materials, national special equipment Engineering Research Technology Center for high-performance carbon fiber production line, provide first-class thermal energy engineering solutions for customers, and create more social benefits for the society.