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Device for recycling oil or solvent from solid-containing oil through spray flash evaporation drying and recycling method

A technology for flash drying and oil products, applied in the field of coal chemical industry, can solve the problem of not giving full play to the advantages of high value-added components in oil residues, and achieve the effects of not easily leaking dust and toxic gases, reducing evaporation temperature, and shortening drying time.

Active Publication Date: 2019-09-13
CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used methods include blending burning, dry distillation and gasification, but these existing methods cannot give full play to the advantages of medium and high value-added components such as oil residue, oil sludge, and oil sand.

Method used

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  • Device for recycling oil or solvent from solid-containing oil through spray flash evaporation drying and recycling method
  • Device for recycling oil or solvent from solid-containing oil through spray flash evaporation drying and recycling method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Such as figure 1 As shown, the raw material is a recovery process of the extractant in a coal-based oil residue raffinate of a coal chemical plant. The process is a spray drying operation under reduced pressure. The specific steps include:

[0052] (1) The first choice is to input the extractant in the viscous oil residue, that is, the coal-based oil residue raffinate, into the raw material buffer tank 1 through the raw material delivery pipeline 1.1 and pressurize it through the feed pump 2, and then send it to the oil residue preheater 3, After exchanging heat with the oil gas (or solvent) at the top of the spray flash drying tower 6, it is sent to the oil residue heater 4 to exchange heat with the heat transfer oil to 200-250°C, and then enters the heating furnace 5 to be heated to about 360-380°C, and then enters the In the spray flash drying tower 6, the specific feed position is close to the upper side of the spray flash drying tower; meanwhile, the spray flash dr...

Embodiment 2

[0058] Such as figure 2 As shown, the raw material is naphtha, and the oil product therein is light oil, so it can be flashed under normal pressure. Compared with Example 1, the specific process device has no dry material lock hopper, dry material bin, heating furnace and vacuum pump. Others are with embodiment 1.

[0059] Application process method of the present invention can adopt following steps

[0060] Include the following steps:

[0061] (1) Input the naphtha into the feed buffer tank 1, and after being pressurized by the feed pump 2, send it to the preheater 3, and send it to the The heater 4 exchanges heat with the heat transfer oil to about 280°C and enters the spray flash drying tower 6; at the same time, the spray flash drying tower 6 quickly flashes the light oil under normal pressure conditions to obtain light oil and gas respectively. Phases and powdery dry granules;

[0062] (2) The powdery dry particles are fed into the dry phase cooler 10 by gravity sel...

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Abstract

The invention discloses a device for recycling oil or a solvent from solid-containing oil through spray flash evaporation drying and a recycling method. The device comprises a feeding buffer tank, a preheater, a heater, a spray flash evaporation drying tower, a dry gas phase scrubbing tower and a solvent condenser, wherein the feeding hole of the feeding buffer tank communicates with a raw material conveying pipeline; the discharge hole of the feeding buffer tank communicates with the feeding hole of the preheater; the discharge hole of the preheater communicates with the feeding hole of the heater; the discharge hole of the heater communicates with the spray flash evaporation drying tower; a gas phase discharge pipeline is arranged at the upper end of the spray flash evaporation drying tower; the gas phase discharge pipeline is connected with the dry gas phase scrubbing tower; a dry phase cooling machine is arranged at the bottom of the gas phase discharge pipeline; a conveyer is connected with the outlet of the dry phase cooling machine; a powder cabin is connected with the outlet of the conveyer; a condensation device is arranged at the lower half section of the dry gas phase scrubbing tower; a circulation pipeline is arranged at the bottom of the dry gas phase scrubbing tower; a gas phase flowing pipeline is arranged at the upper end of the dry gas phase scrubbing tower; the outlet end of the gas phase flowing pipeline is connected with the preheater to achieve heat exchange cooling; and an uncondensed gas which is not cooled is conveyed into the solvent condenser for secondary condensation through an uncondensed gas conveying pipeline.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a device and method for recovering oil or solvent by spraying and flash drying of solid oil products (such as oil residue, oil sludge, oil sand, etc.). Background technique [0002] With the growth of demand for energy and chemical products in China, the contradiction between the supply and demand of high-quality energy such as oil and natural gas in my country is very prominent. Oil residue, oil sludge, oil sand, etc. are solid oil products. Oil sand heavy oil reserves are 400 billion tons, which is far greater than the proven reserves of oil; during oilfield exploitation, a large amount of oil sludge sand will be produced, and oil transportation will also produce a large amount of bilge sludge. According to incomplete statistics, my country produces at least 1.3 million tons of oil sludge; oil residues are mainly produced in coal liquefaction, kerosene co-refinin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/02
CPCC10G1/02
Inventor 刘东明韦存福耿永凯李兵李帅谢琤李伏虎刘浙军宣奇龙周志岩郑丽珍张源梅红波
Owner CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD
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