Antisludging agent for tailgas compressor of styrene device and preparation method of antisludging agent

An exhaust gas compressor, styrene technology, applied in chemical instruments and methods, descaling and water softening, complex/solubilizer treatment, etc. problems such as poor performance, to achieve the effect of easy cleaning and dispersion, reducing adhesion and low cost

Inactive Publication Date: 2015-11-11
SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the above technical problems, the present application provides a styrene plant tail gas compressor scale inhibitor and its preparation method, which solves the technical problems of existing water treatment scale inhibitors such as high cost, poor temperature resistance, poor scale inhibition stability and high cost.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add formaldehyde and distilled water to a four-neck flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 50°C, stir for 20 minutes, and add N-methyl-N-(2-hydroxyethyl) dropwise -1,3-propanediamine and N,N-dimethylethanolamine, heated to 60°C, reacted for 1h.

[0025] Add ethylenediamine, glycine, N,N-di-n-propylethanolamine and hydrochloric acid, raise the temperature to 70°C, react for 2 hours, raise the temperature to 80°C, add the remaining raw materials, and stir for 70 minutes to obtain the scale inhibitor for the tail gas compressor of the styrene plant .

[0026] Each component has a strong synergistic effect, not only can quickly capture the alkyl radicals and peroxyl radicals generated in the tail gas, making them lose the activity of initiating the self-polymerization of active olefins in the tail gas, but also can produce chelation reactions to prevent Coking reaction; the added concentration of the scale inhibi...

Embodiment 2

[0029] Add formaldehyde and distilled water into a four-necked flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 70°C, stir for 40min, and add N-methyl-N-(2-hydroxyethyl) dropwise -1,3-propylenediamine and N,N-dimethylethanolamine, heated to 80°C, reacted for 3h.

[0030] Add ethylenediamine, glycine, N, N-di-n-propylethanolamine and hydrochloric acid, raise the temperature to 90°C, react for 4 hours, raise the temperature to 100°C, add the remaining raw materials, stir for 90min, and obtain the scale inhibitor for the tail gas compressor of the styrene plant .

[0031] Each component has a strong synergistic effect, not only can quickly capture the alkyl radicals and peroxyl radicals generated in the tail gas, making them lose the activity of initiating the self-polymerization of active olefins in the tail gas, but also can produce chelation reactions to prevent Coking reaction; the added concentration of the scale inhibitor ...

Embodiment 3

[0034] Add formaldehyde and distilled water into a four-necked flask equipped with an electric stirrer, dropping funnel, thermometer and reflux condenser, heat to 70°C, stir for 40min, and add N-methyl-N-(2-hydroxyethyl) dropwise -1,3-propylenediamine and N,N-dimethylethanolamine, heated to 80°C, reacted for 3h.

[0035] Add ethylenediamine, glycine, N, N-di-n-propylethanolamine and hydrochloric acid, raise the temperature to 90°C, react for 4 hours, raise the temperature to 100°C, add the remaining raw materials, stir for 90min, and obtain the scale inhibitor for the tail gas compressor of the styrene plant .

[0036] Each component has a strong synergistic effect, not only can quickly capture the alkyl radicals and peroxyl radicals generated in the tail gas, making them lose the activity of initiating the self-polymerization of active olefins in the tail gas, but also can produce chelation reactions to prevent Coking reaction; the added concentration of the scale inhibitor ...

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Abstract

The application discloses an antisludging agent for a tailgas compressor of a styrene device and a preparation method of the antisludging agent. N-methyl-N-(2-ethoxy)-1,3-propane diamine, N, N-dimethylethanolamine, N,N-di-n-propyl cholamine, N,N-dimethyl amino ethyl glycol, distilled water, phosphorous acid, antioxygen, glycine, formaldehyde, hydrochloric acid and nitrophenol polymerization inhibitor are weighed in parts by weight, the addition concentration of the antisludging agent is 10<-6>-0.0001% of charging rate of tailgas; the scale inhibiting ratio is up to 98-100%, and the antisludging agent has an antisludging effect of 98-100% after placing for one month at 50-60 DEG C.

Description

technical field [0001] The application belongs to the technical field of ring reagents, and in particular relates to an environment-friendly and good corrosion inhibitor scale inhibitor for tail gas compressors of styrene plants and a preparation method thereof. Background technique [0002] Scale inhibitor: It is a kind of agent that can disperse insoluble inorganic salts in water, prevent or interfere with the precipitation and scaling of insoluble inorganic salts on metal surfaces, and maintain good heat transfer effects of metal equipment. The anti-corrosion and anti-scaling agent for cold-changing equipment is formulated with epoxy resin and specific amino resin as the base material, adding appropriate amount of various anti-rust, anti-corrosion and other additives, and is a single component. It has excellent shielding, anti-seepage, anti-rust properties, good scale resistance, thermal conductivity, excellent resistance to weak acids, strong alkalis, organic solvents,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/12C02F5/08
Inventor 金可心凌云凌天阳
Owner SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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