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Method for collecting chemical shipping volatile gas

A technology for volatile gas and chemicals, which is used in the collection of volatile gas from chemical shipments, can solve problems such as poor safety and easy explosion, and achieve the effect of preventing excessive oxygen content.

Inactive Publication Date: 2019-02-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is the problem of poor safety caused by volatilization and explosion during the chemical loading process in the prior art. It provides a new collection method for chemical shipping volatile gas

Method used

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  • Method for collecting chemical shipping volatile gas

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Effect test

Embodiment 1

[0022] A method for collecting volatile gases from chemical shipments, such as figure 1 As shown, before the butyl acrylate loading operation starts, the butyl acrylate pipeline is first filled with nitrogen through a nitrogen pipeline and nitrogen connection, and the air is discharged from the pipeline so that the oxygen content in the pipeline reaches below 8%. The collection line of the butyl acrylate loading ship and the butyl acrylate collection pipe are connected by a hose 8 . After the wharf confirms that the ship has the conditions for butyl acrylate collection, the manual butterfly valve 6 is manually opened, after which the butyl acrylate loading operation begins. The butyl acrylate gas produced by loading enters the butyl acrylate collection pipeline, and the two pressure transmitters 1 and 2 measure the cabin pressure and send the signal to the control system PLC. When the pressure reaches above 4.5kPa (gauge pressure), Simultaneously, when the oxygen content in t...

Embodiment 2

[0024] A method for collecting volatile gases from chemical shipments, such as figure 1 As shown, before the MTBE loading operation starts, the MTBE pipeline is first filled with nitrogen through a nitrogen pipeline and nitrogen interface, and the air is discharged from the pipeline to make the oxygen content in the pipeline below 8%. The collection pipeline of the MTBE loading ship and the MTBE collection pipeline are connected by a flexible pipe 8 . After the wharf confirms that the ship has the conditions for MTBE collection, the manual butterfly valve 6 is manually opened, and then the MTBE loading operation begins. The MTBE gas generated by loading enters the MTBE collection pipeline, and the two pressure transmitters 1 and 2 measure the cabin pressure and send the signal to the control system PLC. When the pressure reaches above 4.5kPa (gauge pressure), the oxygen content analysis When the oxygen content in the pipeline measured by instruments 9 and 10 is lower than 8%,...

Embodiment 3

[0026] A method for collecting volatile gases from chemical shipments, such as figure 1As shown, before the butyl acrylate loading operation starts, the butyl acrylate pipeline is first filled with nitrogen through a nitrogen pipeline and nitrogen connection, and the air is discharged from the pipeline so that the oxygen content in the pipeline reaches below 6%. The collection line of the butyl acrylate loading ship and the butyl acrylate collection pipe are connected by a hose 8 . After the wharf confirms that the ship has the conditions for butyl acrylate collection, the manual butterfly valve 6 is manually opened, after which the butyl acrylate loading operation begins. The butyl acrylate gas produced by loading enters the butyl acrylate collection pipeline, and the two pressure transmitters 1 and 2 measure the cabin pressure and send the signal to the control system PLC. When the pressure reaches above 3.5kPa (gauge pressure), Simultaneously, when the oxygen content of th...

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PUM

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Abstract

The invention relates to a method for collecting chemical shipping volatile gas. The method mainly solves the problem that volatile gas volatilizes and easily explodes in the chemical shipping processin the prior art and accordingly the safety is poor. The method for collecting the chemical shipping volatile gas is used, a volatile gas conveying pipeline is connected with a gas collecting pipeline on a ship loading chemicals through a hose, and the conveying pipeline is sequentially connected with a rapid gas permeation valve, a pressure transmitter, an oxygen content analyzer, a rapid cut-off valve, a filter, a bidirectional detonation flame arrester and a fan in sequence according to the conveying direction of the volatile gas. The method well solves the problems, and the method can beused for collecting the chemical shipping volatile gas.

Description

technical field [0001] The invention relates to a method for collecting volatile gas from chemical shipments, in particular to a method for collecting volatile gas generated during the shipment of butyl acrylate and MTBE. Background technique [0002] Butyl acrylate is an important intermediate in organic synthesis and is widely used in industry. Harmful if inhaled, taken orally or absorbed through the skin. Its vapor or mist is irritating to the eyes, mucous membranes and respiratory tract. In addition, butyl acrylate is flammable. It may cause combustion and explosion when exposed to open flame, high heat or contact with oxidants. It is easy to self-polymerize. The polymerization reaction increases with the temperature. Rapidly intensified. Butyl acrylate will produce a large amount of butyl acrylate gas phase during chemical enterprises and dock loading operations. [0003] MTBE (methyl tert-butyl ether) is used as a gasoline additive to increase the octane number, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G67/60
CPCB65G67/60
Inventor 宫中昊于辉张瑜张健中刘全桢
Owner CHINA PETROLEUM & CHEM CORP