On-line pretreatment device for sample gas of ethylene cracking furnace and installing method thereof

A pretreatment device, ethylene cracking furnace technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of continuous and stable operation of online chromatography, pipeline blockage, chromatographic column pollution, etc., to ensure long-term effective operation, Easy to use and maintain, analyze the effect of accurate data

CN102288706BActive Publication Date: 2014-05-28CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2014-05-28

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Abstract

The invention relates to an on-line pretreatment device for sample gas of an ethylene cracking furnace. The device is a box-type unit. An inlet of the device is connected with an outlet of a vortex cooler through a stainless steel pipeline. An outlet of the device is connected with a sample operation system on the front section of an on-line chromatograph through a stainless steel pipeline and finally enters the on-line chromatograph. After the device is adopted, a sampling system of an original cracking furnace does not need to be improved. The on-line pretreatment device is simple and convenient to install, works stably and reliably, is not influenced by the variation of the environment condition and is convenient to use and maintain due to the adoption of the integrated design.
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Description

technical field

[0001] The invention relates to a processing device for sample gas of an ethylene cracking furnace, in particular, an online pretreatment device for sample gas of an ethylene cracking furnace and an installation method thereof. Background technique

[0002] The petrochemical industry is the pillar industry of the national economy, and the ethylene plant is the leading device in the petrochemical industry. There are many methods for ethylene production, but the tube furnace cracking technology is the most mature. Most of the ethylene in the world is cracked by the tube furnace. legally produced. As an important device in the petrochemical production process, the main control goal of the ethylene cracking furnace is to control the cracking depth, production capacity and product selectivity. Effective cracking operations depend on accurate on-line analysis of the cracked gas at the outlet of the quencher. Due to the high temperature, high water content and comp...

Examples

Embodiment Construction

[0023] The present invention is further described below in conjunction with embodiment. The scope of the present invention is not limited by these Examples.

[0024] The schematic diagram of online pretreatment device for sample gas of ethylene cracking furnace of the present invention is shown in figure 1 , the way of use is: confirm that the vortex cooler of the cracking furnace is in the closed state. After the installation of the device is completed, all the on-off valves are in the off state. First, confirm that the three-way switching valve 9 is in the B position and then open the on-off valve 10, and the medium-pressure steam 12 enters the heating pipeline Heat the device, and after 10 minutes of stabilization, open the switch valve 1 and turn on the cracking furnace vortex cooler, the sample gas 11 enters the ethylene cracking furnace sample gas online pretreatment device and passes through the liquid accumulation tank 2, the gas filter 6, and the pressure gauge 7 in s...