Oil-containing wastewater produced during petrochemical processing is usually remitted to the sewage treatment plant for centralized treatment, and a large amount of oil-containing sludge is produced during the sewage treatment process. On the "three sludge" only a simple concentration of a settlement treatment, will cause secondary pollution occurs, three sludge treatment problems have been plagued by petrochemical companies and environmental workers.
Chemical plants, refineries in the sewage treatment process oil sludge produced by the oil separation tank, flotation tanks produced by the flotation, biochemical tanks produced by the residual activated sludge and sewage conditioning tanks, dirty oil tanks and flocculation settlement tanks and other structures produced by the bottom of the tank sludge is referred to as the "three sludge".
Because the petrochemical sludge composition is relatively complex, and contains different kinds of heavy metals, viscosity, fine particles, the general dewatering machine in the petrochemical oil sludge treatment, often by some of the characteristics of the sludge interference, unable to achieve the expected dehydration effect. For example, belt dewatering machine and plate and frame sludge dewatering machine, in the treatment of oil-containing sludge, easy to clog, low dewatering rate, large amount of rinse water; centrifugal machine on the high oil-containing, high-viscosity sludge can not be separated
Shanghai Tongchen Environmental Protection Co., Ltd. production of stacked-screw sludge dewatering machine in the dewatering mechanism to follow the force of the same direction, thin-layer dewatering, proper application of pressure and prolongation of the dewatering path, and so on, to solve the previous generation of sludge dewatering machine equipment easy to clog, can not be separated
Shanghai Tongchen Environmental Protection Co. It solves the technical problems of previous generations of sludge dewatering machines such as easy to clog and unable to deal with oil-containing sludge. For different sludge properties, the company chooses suitable treatment programs with high flexibility. Tongchen environmental protection for different industries with different industry-specific screw shaft
Tongchen environmental protection for the petrochemical industry sludge characteristics, combined with the company's advantages in technological innovation, tailored for the petrochemical industry special stacked screw sludge dewatering machine. The special machine for petrochemical industry has the following characteristics: the filter body adopts special shaft type, which is suitable for the pushing flow characteristics of materials in petrochemical industry;
(1) enhanced drive system, which meets the requirement of larger driving force of oil-containing sludge residue;
(2) the movable and fixed ring adopts the material with higher anticorrosion performance, which is suitable for the strict explosion-proof requirements of the petrochemical industry;
(3) the whole equipment package reaches the explosion-proof requirement of EX ⅡBT4 explosion-proof grade, to meet the strict explosion-proof requirements of the petrochemical industry;
(4) the use of oil-containing sludge special flocculation dosing tank, to overcome the petrochemical sludge is difficult to flocculate, easy to settle the characteristics of the petrochemical sludge;
applicable to a wide range of occasions in the industry: offshore drilling platforms, petroleum refining units, asphalt, rubber and other petrochemical derivatives of the industry, the waste oil recycling industry, and so on.
4?Typical application cases
CNOOC (China) Ltd. Tianjin Branch is a subsidiary of China National Offshore Oil Corporation (CNOOC) in the territory of the branch, founded in 1966, has been with ConocoPhillips, Chevron, Shell, Comac, and many other international oil companies have cooperative business. It is mainly responsible for the exploration, development and production of oil and gas resources in the Bohai Sea area, and is located in Tanggu District, Tianjin, with 17 offshore oil and gas fields, more than 40 production platforms, 4 land terminals, and an annual oil and gas production capacity of more than 10 million cubic meters of oil equivalent.
Entrusted by Tianjin Branch, a subsidiary of CNOOC, Tongchen Environmental Protection started the exploratory work of applying the stacked-screw sludge dewatering machine to the treatment of oil-containing sludge from offshore platforms.
After many communications and land site tests, Tomson Environmental designed a containerized oily sludge dewatering system that is easy to be transported by sea, and successfully completed the dewatering of oily sludge on offshore drilling platforms by using the company's petrochemical industry-specific stacked screw sludge dewatering machine, which solved the problems of high cost and transportation difficulties of oily sludge treatment in the offshore of China National Petroleum Corporation (CNOOC).