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

A coal tar and raw material oil technology, which is applied in the field of coal tar to prepare diesel oil, can solve the problems of restricting popularization and development, poor economic benefits, low economic benefits, etc., and achieve the effect of reliable operation of equipment, no discharge of three wastes, and reliable operation

Active Publication Date: 2013-08-28
梁文胜
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  • Abstract
  • Description
  • Claims
  • Application Information

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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
Comparison scheme
Effect test

Embodiment 1

[0048] Such as figure 1 Shown is a kind of equipment for producing vehicle diesel oil with medium temperature coal tar light oil as raw material, the equipment includes a preheating tank 1 for preheating the raw material oil, and a Circulation heating system, and catalytic separation system for catalyzing and separating the raw oil after heating and gasification;

[0049] The circulating heating system includes a circulating tank 2 and a tube furnace 3 for heating and gasifying the preheated raw oil. Above the circulating tank 2 is a device that communicates with the preheating tank 1 and is used for heating the preheating tank 1. The heated raw material oil is sent to the first feed pipe 2-1 in the circulating kettle 2, and a device for pumping the raw material oil in the circulating kettle 2 into the tubular furnace 3 is arranged between the circulating kettle 2 and the tube furnace 3. The first oil pump 4 for heating and gasification, one side of the tube furnace 3 is prov...

Embodiment 2

[0057] Using the equipment of Example 1, the medium-temperature coal tar light oil—the water oil of the semi-coke factory (the main components are 20% to 25% of mixed phenol oil, 60% to 70% of high-grade aliphatic hydrocarbons, 5% to 15% of asphalt and colloid) %) is a method for producing automotive diesel as a raw material, comprising the following steps:

[0058] Step 1. Use methanol to extract and dephenolize medium-temperature coal tar light oil, and inject the medium-temperature coal tar light oil after extraction and dephenolization as raw material oil into the preheating tank 1 to preheat to 100°C; the amount of methanol used is medium-temperature coal 3 times the volume of tar light oil, the extraction temperature is 30°C;

[0059] Step 2. The preheated raw material oil enters the circulating kettle 2 (50 cubic meters) through the first feeding pipe 2-1. When the liquid level in the circulating kettle 2 rises to 50cm (about 6 tons of raw materials), the second An oil...

Embodiment 3

[0065] Using the equipment of Example 1, the medium-temperature coal tar light oil—the water oil of the semi-coke factory (the main components are 20% to 25% of mixed phenol oil, 60% to 70% of high-grade aliphatic hydrocarbons, 5% to 15% of asphalt and colloid) %) is a method for producing automotive diesel as a raw material, comprising the following steps:

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

[0067]Step 2. The preheated raw oil enters the circulating kettle 2 through the first feed pipe 2-1, and when the liquid level in the circulating kettle 2 rises to 100 cm, the first oil pump 4 is turned on to pump the raw oil in the circulating kett...

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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 by using medium-temperature coal tar light oil as a raw material. Background technique [0002] my country is rich in coal resources, but relatively scarce in oil resources. At present, about 50% to 60% of oil needs to be imported. In the existing coking (semi-coke) industry, a large amount of medium-temperature coal tar in the by-product gas is wasted, causing a lot of pollution. How to rationally 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 methods for producing diesel from coal tar in my country: 1. After the coal tar is distilled at atmospheric pressure, the distillate oil is refined by acid and alkali to be burned as inferior fuel o...

Claims

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Application Information

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IPC IPC(8): C10G55/00
Inventor 梁文胜雷明党文博
Owner 梁文胜
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