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Refinery excess sludge dewatering method and refinery excess sludge dewatering apparatus

A technology for excess sludge and oil refineries, applied in the direction of water/sludge/sewage treatment, sludge treatment, chemical instruments and methods, etc., can solve unfavorable transportation, storage and digestion, poor dehydration effect, complicated process flow and other problems to achieve the effect of high dehydration efficiency, convenient operation and low operating cost

Inactive Publication Date: 2019-09-03
SHANGHAI HUACHANG ENVIRONMENT PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] A technical problem to be solved by the present invention is: the dehydration effect of the traditional sludge mechanical dehydration method is not good, and the moisture content after dehydration treatment is still high, which is not conducive to subsequent transportation, storage and consumption. complicated process

Method used

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  • Refinery excess sludge dewatering method and refinery excess sludge dewatering apparatus
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  • Refinery excess sludge dewatering method and refinery excess sludge dewatering apparatus

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Embodiment 1

[0073] In a deep dewatering device for surplus sludge in an oil refinery, the deep dehydration of surplus sludge is carried out according to the method and device of the present invention, and its specific operation process and effects are described as follows:

[0074] 1. Properties of excess sludge

[0075] The excess sludge used comes from the excess sludge of Shanghai Secco Petrochemical Co., Ltd. After the biochemical excess sludge of Secco Petrochemical is dehydrated by a centrifuge, the moisture content is still 90.9% by weight, and the average particle size is 13.1μm. The mud properties are shown in Table 1 below.

[0076] Table 1: Properties of Aqueous Sludge

[0077]

[0078] 2. Implementation process

[0079] Implement with reference to the method of the present invention, specifically as follows:

[0080] In this embodiment, the material is water-containing sludge, and air is selected as the gas for the swirling and autorotation dehydration of the sludge and ...

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Abstract

The present invention relates to a refinery excess sludge dewatering method and a refinery excess sludge dewatering apparatus, and provides a refinery excess sludge dewatering method, which comprisesthat (A) refinery excess sludge is subjected to swirling flow rotation dewatering; (B) the dried sludge is subjected to gas flow acceleration sorting; (C) the sludge granules having high water contentand sorted in the step (B) return, and are subjected to mixed granulation with wet sludge, and the obtained mixture enters the next swirling flow rotation dewatering process; (D) the sorted sludge with low water content is subjected to swirling flow rotation re-dewatering and granule capture; and (E) swirling flow gas-liquid separation is performed to remove the oil phase and the water droplets carried in the gas obtained in the step (D) to obtain purified gas for recycling. The invention further provides a refinery excess sludge dewatering apparatus.

Description

technical field [0001] The disclosure belongs to the field of petrochemical industry and environmental protection, and relates to a method and a device for realizing the removal of water and oil phases in excess sludge in oil refineries and the separation and return of dried sludge. Specifically, the present disclosure relates to a method and device for advanced dehydration of excess sludge in an oil refinery. Background technique [0002] Oil production continues to increase, and the amount of excess sludge produced in refineries is also increasing. If these excess sludge is not treated or handled properly, it will not only pollute the environment, pollute surrounding water sources and cultivated land, but also damage oil resources. A great waste. The remaining sludge is bulky, perishable, has a foul smell, contains a large number of parasite eggs and pathogenic microorganisms, and has a high water content, with a water content of more than 95% (weight), and contains a sma...

Claims

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Application Information

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IPC IPC(8): C02F11/127C02F11/13C02F103/10
CPCC02F11/127C02F11/13C02F2103/10
Inventor 汪华林付鹏波李剑平黄渊刘毅吕文杰朱静怡于浩徐华瑞崔馨沈其松
Owner SHANGHAI HUACHANG ENVIRONMENT PROTECTION
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