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High-pressure-resistant polymerization kettle carbon manganese steel inner cylinder

A carbon-manganese steel and high-pressure-resistant technology, which is used in the field of carbon-manganese steel inner cylinders of high-pressure polymerization kettles, can solve problems such as poor pressure resistance and corrosion resistance, and achieve cost savings, enhanced adhesion, and simplified production steps. Effect

Inactive Publication Date: 2017-05-31
ANHUI LIFENG MACHINERY TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inner cylinder of the polymerization kettle currently used in the industry has poor pressure resistance and corrosion resistance

Method used

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  • High-pressure-resistant polymerization kettle carbon manganese steel inner cylinder

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Effect test

Embodiment Construction

[0012] Referring to the accompanying drawings, a carbon-manganese steel inner cylinder of a high-pressure polymerization kettle includes a cylinder body 1, a constant pressure through hole 2 is opened on the side wall of the cylinder body 1, and an L-shaped pressure relief hole is connected to one side of the constant pressure through hole 2 3. A sphere 4 is placed in the constant pressure through hole 2, and a pressure regulating spring 5 is placed on the rear end of the sphere 4. The specific preparation process of the cylinder is as follows:

[0013] 1) Cast steel plate, the weight percentage of each alloy composition in the steel plate is: C1.3~1.6%, Si0.6~0.8%, Mo0.45~0.65%, Mn1.35~1.45%, P0.005~0.007%, S0.004~0.006%, Cr1.8~2.1%, W0.1~0.2%, V0.15~0.25%, Bi0.04~0.08%, Sn0.01~0.02%, the balance is iron;

[0014] 2) The steel plate is placed in a vacuum container, and the temperature is kept within 440°C, and an atmospheric pressure of 0.55Pa is applied. The sulfur ions form...

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Abstract

The invention discloses a high-pressure-resistant polymerization kettle carbon manganese steel inner cylinder which comprises a cylinder body, wherein the side wall of the cylinder body is provided with a constant-pressure through hole; one side of the constant-pressure through hole communicates with an L-shaped pressure relief vent; a ball is arranged on the constant-pressure through hole; and a pressure adjustment spring is arranged on the back end of the ball. The preparation technique of the cylinder body comprises the following step: casting a steel plate, wherein the steel plate comprises the following alloy components in percentage by weight: 1.3-1.6% of C, 0.6-0.8% of Si, 0.45-0.65% of Mo, 1.35-1.45% of Mn, 0.005-0.007% of P, 0.004-0.006% of S, 1.8-2.1% of Cr, 0.1-0.2% of W, 0.15-0.25% of V, 0.04-0.08% of Bi, 0.01-0.02% of Sn and the balance of iron. The pressure adjustment structure design is adopted to ensure the maximum pressure value of the inner cylinder, so the inner cylinder has high safety performance.

Description

technical field [0001] The invention relates to the field of polymerization kettles, in particular to a carbon-manganese steel inner cylinder of a high-pressure polymerization kettle. Background technique [0002] The polymerization kettle is used for emulsion polymerization. There is a stainless steel horizontal paddle agitator inside, which is driven by a motor through a transmission device and a reducer. The outer wall of the kettle is usually made of carbon steel, lined with stainless steel, and also lined with enamel. During polymerization, it can be produced batchwise in a single tank, or in series with continuous production in multiple tanks. The polymerization reactants enter the upper part of the next tank from the lower part of one tank. The kettle is equipped with temperature, pressure and other instruments, as well as inlet and outlet ports. The inner barrel of the polymerization kettle currently used in the industry has poor pressure resistance and corrosion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/02B01J3/04C22C38/02C22C38/04C22C38/22C22C38/24C23C8/42
CPCB01J19/02B01J3/04C22C38/002C22C38/008C22C38/02C22C38/04C22C38/22C22C38/24C23C8/42
Inventor 胡星光
Owner ANHUI LIFENG MACHINERY TOOL