Water soluble dispersing scale inhibitor and application of water soluble dispersing scale inhibitor in acrylonitrile production device

A water-soluble, antiscalant technology, applied in the purification/separation of carboxylic acid nitrile, organic chemistry, etc., can solve the problems of shortening the operation cycle of the device, impact, material loss, etc., achieve significant economic and social benefits, and easy to use Effect
CN106565537AActive Publication Date: 2017-04-19北京万智石油化工有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京万智石油化工有限公司
Publication Date
2017-04-19

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Abstract

The invention discloses a water soluble dispersing scale inhibitor and an application of the water soluble dispersing scale inhibitor in an acrylonitrile production device. The water soluble dispersing scale inhibitor comprises a component A, a component B and a component C. The component A is a copolymer of aryl sulfonate and formaldehyde. The component B is one or more of magnesium sulfate, potassium sulfate and magnesium sulfite. The component C is one or more of 2,6-di-tert-butylphenol, diethylhydroxylamine and isopropyl hydroxylamine. The mass ratio of the component A to the component B to the component C is 10-50:1-10:1-10. By adopting the water soluble dispersing scale inhibitor, scale formed by free radical polymerization and dispersion can be effectively inhibited, so that the scale is uniformly dispersed in a water phase, thus, the situation that the scale is precipitated in the acrylonitrile production device is avoided, and the production operation cycle of the device can be prolonged.
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Description

technical field

[0001] The invention belongs to the field of acrylonitrile production, in particular to a water-soluble dispersed scale inhibitor used in acrylonitrile production equipment (such as a recovery tower and a four-effect evaporation system) and an application thereof. Background technique

[0002] Acrylonitrile (AN) is an important monomer in the organic synthesis industry. Due to the double bond in its structural formula, its chemical properties are relatively active, and chemical reactions such as self-polymerization, copolymerization, and hydrolysis will occur. During production and processing, due to the occurrence of acrylonitrile polymerization, on the one hand, the product yield decreases; on the other hand, the polymer deposits in the system, causing blockage of heat exchangers, trays and process pipes.

[0003] At present, problems such as blockage of the aftercooler of the acrylonitrile reactor, fouling of the recovery tower tray and reboiler, and more...

Claims

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