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A kind of preparation method of graphite cylinder

A graphite cylinder and graphite technology, applied in chemical instruments and methods, manufacturing tools, sustainable manufacturing/processing, etc., can solve the problems of poor stability of graphite cylinders, high manufacturing energy consumption, and high manufacturing costs, saving roasting time, Reliable quality and small directional differences in strength indicators

Active Publication Date: 2019-08-16
鸡西市凯威碳素制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of material waste, long manufacturing period, high manufacturing cost, large manufacturing energy consumption and poor stability of the prepared graphite cylinder in the existing graphite cylinder preparation process, the present invention proposes a graphite cylinder preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0036] Specific embodiment one: a kind of preparation method of graphite cylinder is carried out according to the following steps:

[0037] Step 1. Weigh the raw materials

[0038] Weigh the raw materials according to the mass percentage of 74% to 78% dry material and the balance as asphalt;

[0039] The dry material is composed of 60% of petroleum coke particles, 20% of pitch coke particles, 5% to 10% of needle coke particles and the balance of graphite crushed particles according to mass percentage;

[0040] Step 2. Blank forming

[0041] Mix the dry material and asphalt evenly to get the mixture, pour the mixture into the mold under the vibration of the mold, keep the vibration of the mold, under the pressure of 1.12 ~ 2kg / cm 2 The mixture in the mold is compacted to the graphite cylinder blank of the target height under the pressure; the vibration frequency of the mold vibration is 2300-2700 times / min;

[0042] Step 3, graphite cylinder blank roasting

[0043] The grap...

specific Embodiment approach 2

[0056] Embodiment 2: This embodiment differs from Embodiment 1 in that the asphalt described in step 1 is medium-temperature coal tar pitch. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0057] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: when the wall thickness of the graphite cylinder is less than 100 mm, the dry material with a particle size greater than 2 mm in the dry material in step one accounts for Less than 2% of the total weight, the dry material with a particle size of 1-2mm accounts for 8%-14% of the total weight of the dry material, and the dry material with a particle size of 0.5-1mm accounts for 7%-13% of the total weight of the dry material. The dry material with a diameter of less than 0.074 mm accounts for 54% to 60% of the total weight of the dry material, and the balance is the dry material with a particle size of 0.075 to 0.15 mm. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a preparation method for graphite cylinders and relates to preparation methods for the graphite cylinders. The preparation method is used for solving the problems in the existing graphite cylinder preparation processes that materials are wasted, the preparation period is long, the preparation cost is high, the energy consumption of preparation is high, and the stability of prepared graphite cylinders is poor. The preparation method comprises the steps: (1) weighing raw materials: weighing the raw materials: 74% to 78% (by mass) of dry matter and the balance of asphalt; (2) carrying out blank forming: carrying out vibration forming in a mold; (3) roasting graphite cylinder blanks in a roasting furnace; and (4) carrying out graphitization on the graphite cylinder blanks. According to the preparation method, the prepared graphite cylinders are reasonable in material structure design and dependable in quality, roasting time, the raw materials, burned coal, labor hours and binding resin can be saved compared with those of the traditional production processes, and thus the preparation method has the effects of energy saving and environment-friendliness; and by adopting a vibration forming technology, the graphite cylinders are compact in structure, high in thermal stability and good in chemical stability. The preparation method is applicable to the preparation of the graphite cylinders.

Description

technical field [0001] The invention relates to a preparation method of a graphite cylinder. Background technique [0002] In the process of national defense, scientific research, PVC chemical industry, natural gas chemical industry, coal chemical industry, dyestuffs, chemical fertilizers, pharmaceuticals, silicon industry, waste acid treatment and other processes, a large amount of graphite chemical equipment is used, especially graphite blocks as the main components of chemical equipment The annual domestic consumption is about 9,000 tons, so the market prospect of this product is very broad. In various types of chemical equipment, many main parts are a combination of graphite products in the shape of a cylinder, such as: the gas-liquid mixing chamber of the absorption tower, the lower separator, the mixing chamber of the sulfuric acid diluter, the tower body of the desorption tower, the rectification tower The body, the hydrogen chloride synthesis furnace body, the combu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/205C04B35/52C04B35/622C04B35/634B28B3/02
CPCB28B3/022C04B35/522C04B35/622C04B35/634C04B2235/3418C04B2235/422C04B2235/602C04B2235/6562C04B2235/6567C04B2235/661C04B2235/77C04B2235/95C04B2235/96C04B2235/9607Y02P20/10
Inventor 杜明彦匡乃刚徐丽华
Owner 鸡西市凯威碳素制品有限公司