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Efficient scale inhibitor of tail-gas compressor of styrene device and application method thereof

A technology of exhaust gas compressor and scale inhibitor, which is used in chemical instruments and methods, organic chemistry, hydrocarbons, etc.

Inactive Publication Date: 2012-07-04
北京斯伯乐科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are no reports on patents related to scale inhibitors for tail gas compressors of styrene plants at home and abroad

Method used

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  • Efficient scale inhibitor of tail-gas compressor of styrene device and application method thereof
  • Efficient scale inhibitor of tail-gas compressor of styrene device and application method thereof
  • Efficient scale inhibitor of tail-gas compressor of styrene device and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～27

[0017] Under constant stirring, by mass, in commercially available 2# solvent (commercial brand, main component is hydrocarbons), add each compound component that table 1, table 2 and table 3 provide respectively, make it mix homogeneously, That is, the tail gas compressor scale inhibitor of the present invention is obtained. Measured according to the method specified in GB / T265, the kinematic viscosity of the scale inhibitor is 1-5 at 40°C.

[0018] Table 1: Components and ratios of scale inhibitors for high-efficiency compressors in Examples 1 to 9 (data in the table are all parts by mass)

[0019]

[0020] Table 2: Components and ratios of scale inhibitors for high-efficiency compressors in Examples 10 to 18 (data in the table are all parts by mass)

[0021]

[0022] Table 3: Components and ratios of scale inhibitors for high-efficiency compressors in Examples 18 to 27 (data in the table are all parts by mass)

[0023]

Embodiment 28

[0025] Add the high-efficiency scale inhibitor for tail gas compressor of Example 1 into the mixed hydrocarbons composed of 100g styrene, α-methylstyrene and vinylbenzene (mass fraction is respectively 50%, 20%, 30%) at 2000ppm and Placed in a closed stainless steel container with a volume of 2L, reacted at a temperature of 120°C, a pressure of 2.5MPa, and a residence time of 48h. After the reaction, the mass of the polymer produced was measured to be 5.891g.

Embodiment 29

[0027] The tail gas compressor high-efficiency scale inhibitor of example 2 is added in the mixed hydrocarbon that is made up of 100g styrene, α-methylstyrene, vinylbenzene (mass fraction is respectively 50%, 20%, 30%) by 1800ppm and Placed in a closed stainless steel container with a volume of 2L, reacted at a temperature of 120°C, a pressure of 2.5MPa, and a residence time of 48h. After the reaction, the mass of the polymer produced was measured to be 5.973g.

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Abstract

The invention relates to an efficient scale inhibitor of a tail-gas compressor of a styrene device and an application method thereof, comprising hydroxylamine compounds, alcohol amine compounds and phenol compounds. The invention overcomes the disadvantages that the generation of polymer dirt in the tail-gas compressor can not be effectively inhibited by using an ethylbenzene physical spraying method, can thoroughly inhibit and suppress the radical polymerization of the styrene, alpha-methyl styrene, phenyl ethylene and the other activated alkenes in the styrene tail-gas compressor, and has the functions of metallic catalytic coke deposition suppression and detergency and dispersancy. The invention has the advantages of safety and environment protection, energy conservation and low energyconsumption and simple use, has no influence on downstream processes, can effectively promote the operational cycle and working load of the styrene tail-gas compressor, reduce energy and material consumption of the styrene device, and can improve the economical and social effects of the whole styrene device.

Description

Technical field: [0001] The invention relates to a high-efficiency scale inhibitor for a tail gas compressor of a styrene plant and a use method thereof. Background technique: [0002] Styrene is an important organic chemical raw material, and most of the world uses ethylbenzene dehydrogenation process to prepare styrene. Styrene is a very active compound, and it is very easy to cause blockage of pipelines and equipment due to self-polymerization during the production process, especially for styrene tail gas compressors. The styrene tail gas compressor is one of the most important key equipment in the ethylbenzene dehydrogenation unit of the styrene plant. Its main function is to compress the non-condensable liquid after ethylbenzene dehydrogenation, so as to separate and recover the styrene in the tail gas , to increase the yield of the target product, on the other hand, the tail gas compressor provides negative pressure for the ethylbenzene dehydrogenation reactor, so tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C5/327C07C15/46C23F15/00
Inventor 刘宽胜张丽欣裴浩侯金顺何宏晓刘志清曹阳文源陈洁
Owner 北京斯伯乐科技发展有限公司
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