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Method and equipment for producing automotive diesel fuel from medium temperature coal tar light oil as raw material

A technology for coal tar and raw material oil, which is applied in the field of preparing diesel oil from coal tar, can solve the problems of restricting promotion and development, low economic benefits, poor economic benefits, etc., and achieves the effects of reliable operation of equipment, no discharge of three wastes, and stable operation.

Active Publication Date: 2014-12-10
梁文胜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the sulfur and nitrogen impurities contained in it are oxidized during the combustion process, and a large amount of waste residue and sewage will be produced in the acid-base refining process. This method has poor economic benefits and seriously pollutes the environment; 2. Using coal as raw material, Blending 10% medium-temperature coal tar, using appropriate coal liquefaction and hydrofining technology to produce clean fuel, but this production method requires a considerable investment, and the technology is not yet fully mature. Although the operation method is a continuous production method, the cost is far away Higher than the cost of petrochemical diesel, the economic benefit is low, which seriously restricts the promotion and development of the project, and it belongs to the state support and subsidy project

Method used

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  • Method and equipment for producing automotive diesel fuel from medium temperature coal tar light oil as raw material

Examples

Experimental program
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Effect test

Embodiment 1

[0048] Such as figure 1 Shown is an equipment for producing vehicle diesel using medium-temperature coal tar and light oil as raw material. The equipment includes a preheating tank 1 for preheating the feedstock oil, and heating and gasifying the preheated feedstock oil. Circulating heating system, and catalytic separation system used to catalyze and separate the heated and gasified feedstock oil;

[0049] The circulating heating system includes a circulating kettle 2 and a tube furnace 3 for heating and gasifying the preheated raw oil. The circulating kettle 2 is provided above the circulating kettle 2 in communication with the preheating tank 1 and used for preheating The heated feed oil is sent to the first feed pipe 2-1 in the circulating kettle 2, and between the circulating kettle 2 and the tube furnace 3 is provided for pumping the feed oil in the circulating kettle 2 into the tube furnace 3. A first oil pump 4 for heating and gasification. One side of the tube furnace 3 ...

Embodiment 2

[0057] Using the equipment of Example 1, the medium-temperature coal tar light oil-Lanzhou coal plant water oil (the main components are mixed phenol oil 20%-25%, higher aliphatic hydrocarbon 60%-70%, asphalt and gum 5%-15% %) The method of producing automotive diesel as raw materials includes the following steps:

[0058] Step 1. Use methanol to extract and dephenolize the medium temperature coal tar light oil, and use the medium temperature coal tar light oil after extraction and dephenolization as the feedstock oil to be injected into the preheating tank 1 to be preheated to 100°C; the amount of methanol used is the medium temperature coal 3 times the volume of tar light oil, and the extraction temperature is 30℃;

[0059] Step 2. The preheated feedstock oil enters the circulating kettle 2 (50 cubic meters) through the first feed pipe 2-1. When the liquid level in the circulating kettle 2 rises to 50 cm (about 6 tons of raw material), turn on the An oil pump 4 pumps the raw oil...

Embodiment 3

[0065] Using the equipment of Example 1, the medium-temperature coal tar light oil-Lanzhou coal plant water oil (the main components are mixed phenol oil 20%-25%, higher aliphatic hydrocarbon 60%-70%, asphalt and gum 5%-15% %) The method of producing automotive diesel as raw materials includes the following steps:

[0066] Step 1. Use methanol to extract and dephenolize the medium temperature coal tar light oil, and use the medium temperature coal tar light oil after extraction and dephenolization as the feed oil to inject the preheating tank 1 to preheat to 260°C; the amount of methanol used is the medium temperature coal Twice the volume of tar light oil, and the extraction temperature is 25℃;

[0067] Step 2: The preheated feedstock oil enters the circulating kettle 2 through the first feed pipe 2-1. When the liquid level in the circulating kettle 2 rises to 100cm, turn on the first oil pump 4 to pump the feedstock oil in the circulating kettle 2 Into the tube furnace 3 for hea...

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Abstract

The invention discloses equipment for producing an automotive diesel fuel from medium temperature coal tar light oil as a raw material. The equipment comprises a preheating tank for preheating the raw oil, a cyclic heating system for heating and gasifying the preheated raw oil, and a catalytic separation system for catalyzing and separating the raw oil which is heated and gasified previously, wherein the cyclic heating system comprises a cyclic kettle and a tubular furnace for heating and gasifying the preheated raw oil; and the catalytic separation system comprises a catalatic tower for catalytically cracking the gasified raw oil and a separation tower for separating a product obtained through the catalytic cracking. In addition, the invention also discloses a method for producing the automotive diesel fuel from the medium temperature coal tar light oil as the raw material by using the equipment. The equipment provided by the invention is reliable to run, simple to operate, and capable of realizing continuous production. The production method provided by the invention is simple and feasible, stable to operate and free of emission of three wastes in the production process, and is energy-saving and environment-friendly.

Description

Technical field [0001] The invention belongs to the technical field of preparing diesel from coal tar, and in particular relates to a method and equipment for producing vehicle diesel using medium-temperature coal tar light oil as raw materials. Background technique [0002] my country is rich in coal resources, while oil resources are relatively scarce. At present, about 50% to 60% of oil needs to be imported. In the existing coking (blue charcoal) industry, a large amount of medium temperature coal tar in the by-product gas is wasted, causing a lot of pollution. How to use coal tar, especially medium temperature coal tar, to obtain high-quality vehicle fuel oil and other chemical raw materials Received more and more attention. [0003] At present, there are roughly two ways to make diesel from coal tar in my country: 1. After coal tar is distilled at atmospheric pressure, the distillate is refined into low-quality fuel oil through acid and alkali, directly burned or emulsified a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G55/00
Inventor 梁文胜雷明党文博
Owner 梁文胜
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