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Refinery sludge dewatering system

A technology for sludge dehydration and oil refinery, which is applied in dehydration/drying/concentrated sludge treatment, etc. It can solve the problems of centrifuge dehydrator and filtrate lifting pump not running normally, and achieve the effect of reducing pollution and improving the environment

Inactive Publication Date: 2013-02-06
SHAANXI ALLIANCE LOGISTICS
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Problems solved by technology

[0003] According to the above process, after careful design and construction, after putting into operation, it was found that there was a thick layer of emulsion floating in the filtrate pool receiving the centrifuge filtrate, which made the filtrate lifting pump unable to operate normally. Guarantee the normal operation of the lift pump for about 1 day
Therefore, the centrifuge does not function properly

Method used

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  • Refinery sludge dewatering system

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Embodiment 1

[0011] Refinery sludge dewatering system, including outdoor open-air sludge storage tanks connected in sequence, sludge storage tank 1 with heating structure, sludge conditioning system 2, sludge thickening tank 3, stirring tank 4, screw conveying system 6 and Centrifugal dehydrator 5.

[0012] The addition of the sludge storage tank 1 has greatly improved the environmental conditions of the surrounding residents and reduced the serious pollution of the atmosphere caused by the original open-air storage tank. Due to the cold climate in the north, the design of the sludge storage tank 1 should not only solve the problem of winter antifreeze for the sludge in the tank, but also consider the water cutting of the tank and the convenience and safety of the workers' operation. The following methods have been taken to solve the above-mentioned problems.

[0013] (1) The inside of the tank is heated and the outside of the tank is kept warm.

[0014] (2) The water cutting pipes are c...

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Abstract

The invention relates to a sludge treatment device, in particular to a refinery sludge dewatering system. The refinery sludge dewatering system comprises an outdoor open-air sludge storage pool, sludge concentrating tanks, a mixing pool and centrifugal dewaterers in sequential connection, and sludge storage tanks and sludge conditioning systems, which are mutually connected, are arranged between the outdoor open-air sludge storage pool and the sludge concentrating tanks. The refinery sludge dewatering system not only solves the problem of emulsion in a filtrate pool, but also improves the environment for surrounding residents, reduces pollution of sludge to atmosphere and obtains certain economic and social benefits.

Description

technical field [0001] The invention relates to a treatment device for sludge. Background technique [0002] The sludge in the sewage treatment plant of the refinery includes the bottom sludge (sludge) of the grease trap, the scum produced by the flotation and dosing of the flotation tank (air flotation tank), the remaining sludge discharged from the biological aeration tank or the secondary sedimentation tank, usually It is called "three mud". Among them, oil sludge is mostly naturally settled oil particles (relative density greater than 1), mud, slag, ash, etc., and has good sedimentation performance. Scum, containing more oil and chemicals, and contains a lot of air bubbles. The remaining sludge contains a large amount of biofloc, contains a little oil, is neutral, and the volatile solid content accounts for about 80% of the total solid content. Harmful substances and petroleum hydrocarbons in oily sludge will seriously pollute soil and water sources with the erosion o...

Claims

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Application Information

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IPC IPC(8): C02F11/14
Inventor 王耀斌
Owner SHAANXI ALLIANCE LOGISTICS
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