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Equipment for collecting and conveying VOCs loading gas and method for safely collecting and conveying VOCs gas

A gas and equipment technology, which is applied in the field of VOCs loading gas collection and transportation equipment, can solve the problems of patents and literature gaps, VOCs collection and processing hazards, etc., and achieve the effect of reducing VOCs emissions, efficient collection and transportation, and reducing the concentration of organic matter

Active Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Because the collection and treatment of VOCs generated during the loading process of volatile organic compounds tank trucks is particularly dangerous, the current patents and literature on this aspect are almost blank

Method used

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  • Equipment for collecting and conveying VOCs loading gas and method for safely collecting and conveying VOCs gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] During the loading process of 3-chloropropene, connect the gas collection pipe to the exhaust port of the 3-chloropropene tank car, start the loading of 3-chloropropene, and at the same time turn on the fan of the gas collection pipe, the VOCs gas in the tank car , enter the 0°C chilled water condenser from the collection pipe at a flow rate of 3m / s, and part of the gas condenses into the nitrogen-sealed FRP collection tank. While turning on the fan, open the nitrogen gas valve and the gas vent valve, and the gas vent valve and the oxygen analyzer. The distance between the pipelines is 40 meters, the control pressure (gauge pressure) is 1.5KPa, and the flow rate of nitrogen gas is controlled. The uncondensed loading gas and nitrogen gas are mixed evenly in the mixer. It is detected by the three-choice oxygen analyzer, and the oxygen analyzer is in situ Laser oxygen analyzer. When the mixed gas reaches below 4% oxygen content, close the organic gas vent valve, open the o...

Embodiment 2

[0052] During the loading process of MTBE, connect the gas collection pipe to the exhaust port of the MTBE tank car, start the MTBE loading, and at the same time turn on the fan of the gas collection pipe, the VOCs gas in the tank car will flow from the collection pipe at a flow rate of 5m / s Enter the -5°C chilled water condenser (salt water condensation), and part of the gas condenses into the stainless steel collection tank. While turning on the fan, open the nitrogen gas valve and the gas vent valve. The pipe distance between the gas vent valve and the oxygen analyzer is 50 meters, control pressure (gauge pressure) 1.5KPa, control nitrogen flow rate, uncondensed loading gas and nitrogen are mixed evenly in the mixer, and are tested by three-selection oxygen analyzer, the oxygen analyzer is an in-situ laser oxygen analyzer. When the mixed gas reaches below 3% oxygen content, close the organic gas vent valve, open the organic gas delivery valve, so that the organic gas enters ...

Embodiment 3

[0054] During the gasoline loading process, connect the gas collection pipe to the exhaust port of the gasoline tank car, start the gasoline loading, and at the same time turn on the fan of the gas collection pipe, the VOCs gas in the tank car will flow from the collection pipe at a flow rate of 6m / s Enter the -5°C chilled water condenser (salt water condensation), and part of the gas condenses into the stainless steel collection tank. While turning on the fan, open the nitrogen gas valve and the gas vent valve. The pipe distance between the gas vent valve and the oxygen analyzer is 50 meters, control pressure (gauge pressure) 1.5KPa, control nitrogen flow rate, uncondensed loading gas and nitrogen are mixed evenly in the mixer, and are tested by three-selection oxygen analyzer, the oxygen analyzer is an in-situ laser oxygen analyzer. When the mixed gas reaches below 2% oxygen content, close the organic gas vent valve, open the organic gas delivery valve, so that the organic ga...

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Abstract

The invention discloses equipment for collecting and conveying VOCs loading gas and a method for safely collecting and conveying the VOCs gas. The equipment comprises a condensing device, a mixing device, a protective gas supply device, a gas detection device, an air draft device, a gas collecting pipeline and an emptying valve, the condensing device, the mixing device, the detecting device and the air draft device are sequentially arranged on the gas collecting pipeline in series, the emptying valve is arranged at the output end of the gas collecting pipeline, and the protective gas supply device is connected with the mixing device through a pipeline. In the organic liquid loading process, the equipment can hermetically collect VOCs discharged by a tank car, monitor gas composition, reduce the concentration of organic matter through condensation, dilute the concentration of oxygen by mixing inert gas, control the concentration of mixed gas within the lower limit of gas explosion through DCS (or PLC) control, safely convey the gas to a waste gas treatment device, and achieve the purpose of waste gas treatment. And safe conveying and treatment are ensured.

Description

technical field [0001] The invention relates to a device for collecting and transporting VOCs loading gas, and also relates to a method for safely collecting and transporting VOCs by using the equipment for collecting and transporting VOCs loading gas, belonging to the technical field of chemical or petrochemical emission reduction. Background technique [0002] Volatile organic compounds (Volatic Organic Compounds, referred to as VOCs) refer to organic compounds with a boiling point between 50 and 260 °C under normal pressure. After the volatile organic chemical products are produced by the manufacturer, they need to be transported to the application site by means of transportation. Usually It is transported by car or train tank car. During the loading process of tank car, VOCs gas will inevitably be produced. [0003] The VOCs gas produced during the loading process of the volatile organic compound tanker has the following characteristics: high concentration of organic mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/00B01D53/30F23G7/06F17D5/00
CPCB01D53/002B01D53/30F23G7/06F17D5/00B01D2257/708Y02A50/20
Inventor 吴劲松陆小虎孙在东郝新兵
Owner CHINA PETROLEUM & CHEM CORP
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