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Oil tank and sewage tank mechanical automatic cleaning and recovery system and method

A technology of automatic cleaning and recycling methods, applied in cleaning methods and utensils, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., can solve the problems of many preparations, slow cleaning speed, and incomplete cleaning. , to achieve the effect of improving work efficiency, strong work ability and significant energy saving effect

Active Publication Date: 2016-04-20
大庆市先科石油机械设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology uses manual cleaning, which has the disadvantages of heavy workload, many steps of preparation work in the early stage, slow cleaning speed, incomplete cleaning, and certain potential safety hazards, etc.
The cleaned up dirty oil, sewage and sludge will not be treated, and the discarded sewage will pollute the environment and waste energy

Method used

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  • Oil tank and sewage tank mechanical automatic cleaning and recovery system and method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The mechanical automatic cleaning and recovery method of the sewage tank of the oil storage tank of the present invention, through the following steps:

[0021] a. Oil transfer: transfer the liquid crude oil in the tank to be cleaned out of the tank to be cleaned;

[0022] b. Mechanical ventilation: the oil vapor in the tank to be cleaned is completely discharged by injecting nitrogen;

[0023] c. Cleaning of the same oil: heat the tank to be cleaned to 70°C, pressurize the crude oil in other tanks to 0.9MPa, crush and dissolve the condensed oil in various parts of the tank to be cleaned, and disperse it , After it has fluidity, it is transferred out of the tank to be cleaned;

[0024] d. Washing with warm water: After pressurizing clean water at 80°C to 0.6 MPa, clean all parts in the tank; discharge the oil-water mixture after cleaning;

[0025] e. Separation. After the oil-water mixture discharged in step d is fully stirred and air-floated, the three-phase separati...

Embodiment 2

[0027] The mechanical automatic cleaning and recovery method of the sewage tank of the oil storage tank of the present invention, through the following steps:

[0028] a. Oil transfer: transfer the liquid crude oil in the tank to be cleaned out of the tank to be cleaned;

[0029] b. Mechanical ventilation: the oil vapor in the tank to be cleaned is completely discharged by injecting nitrogen;

[0030] c. Cleaning of the same oil: heat the tank to be cleaned to 90°C, pressurize the crude oil in other tanks to 0.6MPa, crush and dissolve the condensed oil in various parts of the tank to be cleaned, and disperse it , After it has fluidity, it is transferred out of the tank to be cleaned;

[0031] d. Washing with warm water: After pressurizing clean water at 100°C to 0.9MPa, clean all parts in the tank; discharge the oil-water mixture after cleaning;

[0032] e. Separation. After the oil-water mixture discharged in step d is fully stirred and air-floated, the three-phase separati...

Embodiment 3

[0035] The mechanical automatic cleaning and recovery system of the sewage tank of the oil storage tank of the present invention is composed of a tank body 1, a cleaning spray gun 2, a coagulation settling tank 3 and a muddy water settling tank 4. The bottom outlet pipeline of the tank body 1 is connected to the suction The device 5 is connected, the outlet of the suction device 5 is respectively connected with the buffer pool 6, the inlet of the oil tank 7 and the outlet pipeline of the oil tank 7, and the outlet pipeline of the oil tank 7 is connected with the circulation device 8 and the floating boat in the inner cavity of the tank body 1 in turn. More than one cleaning spray gun 2 in the lower part of 9 is connected, and a nitrogen inlet 10 is provided on the floating boat 9 to communicate with the external nitrogen tank 11; Tower 26; the top pipeline outlet of the trinity separation tower 26 communicates with the secondary separation tank I 27, the upper pipeline outlet o...

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Abstract

The invention discloses an oil tank and sewage tank mechanical automatic cleaning and recovery system and a method, and relates to the field of cleaning of tank depositions. The method comprises the following steps: crude oil with fluidity in a cleaned tank is shifted out of the cleaned tank; after crude oil in other oil tanks is heated and pressurized, local condensed oil more difficult to dissolve in the cleaned tank is crushed and dissolved to realize fluidity, and is shifted out of the cleaned tank; after the crude oil in other oil tanks is heated and pressurized, the condensed oil in each part of the cleaned tank is dissolved to disperse and realize fluidity, and is shifted out of the cleaned tank; and after clear water is heated and pressurized, each part in the tank is cleaned. The oil tank and sewage tank mechanical automatic cleaning and recovery system and method are reasonable in structural design and strong in working capacity, synchronously perform recovery and separation of cleaned wastes in the tanks, realize automatic operation in the whole process, reduce the investment of manpower and material resources, and largely increase the working efficiency; and sewage is treated to reach the oilfield sewage index, and enters an oilfield water system for recycling.

Description

technical field [0001] The invention relates to the field of tank sediment cleaning, in particular to a mechanical automatic cleaning and recovery system and method for sewage tanks of oil storage tanks. Background technique [0002] Sewage settling tanks, oil storage tanks and other tanks will be widely used in the oil field production process and other industrial fields, or pools such as sewage ponds and sewage oil ponds, as storage bodies for dirty liquids containing a large amount of impurities, these dirty liquids After the storage body has been used for a period of time, due to the accumulation of dirty oil and sludge, the internal sludge residues gradually precipitate and adsorb to the bottom and side walls of the tank, occupying a large amount of space in the tank and seriously affecting the storage of the tank. volume, and therefore require regular cleaning. The existing technology uses manual cleaning, which has the disadvantages of heavy workload, many preparator...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B9/093B08B7/00C02F9/04
CPCB08B7/0085B08B9/0856B08B9/0933C02F1/40C02F1/52C02F9/00C02F2001/007C02F2301/08
Inventor 潘永国
Owner 大庆市先科石油机械设备有限公司
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