Composite antichlor as well as preparation and use method thereof

Abstract

The invention provides a composite antichlor as well as a preparation and use method thereof. The composite antichlor comprises the following raw materials in parts by weight: 5-10 parts of sodium methylate, 25-35 parts of methanol, 5-10 parts of sodium hydroxide, 10-20 parts of sodium ethoxide, 10-15 parts of triethanolamine, 15-25 parts of phenylamine, 10-15 parts of triethylamine and 20-25 parts of diethylamine. The preparation method of the composite antichlor comprises the following steps: weighing raw materials, and stirring the raw materials in a reaction kettle, so as to obtain the composite antichlor. The use method of the composite antichlor comprises the following steps: putting a chlorine-containing material into the stirring reaction kettle with the composite antichlor, carrying out a reaction, and further carrying out separation. The composite antichlor provided by the invention is reasonable in formula, low in preparation cost, good in dechloridation effect, low in byproduct quantity, small in toxicity, not liable to volatilization, not liable to combusting and safe to use, chlorine in a C5 resin can be effectively desorbed, additional values of products can be increased, and later process operation can be facilitated.

Description

technical field [0001] The invention relates to the technical field of chemical dechlorination, in particular to a composite dechlorination agent and a preparation and use method thereof. Background technique [0002] Naphtha is cracked in the ethylene industry chain, and the by-product of the cracking is cracked C5, which can be used in the production of C5 resin, but chlorine-containing additives are needed in the production process of C5 resin, so in During the production of C5 resin, the C5 resin raffinate will contain a certain amount of chlorine. When the chlorine content in the C5 resin raffinate is higher than 10 μg / g, the C5 will be hydrogenated after the second stage. Organochlorine is converted into hydrogen chloride, and the hydrogen chloride produced will cause certain corrosion to equipment, pipelines, etc., resulting in greater safety hazards in the production process. However, there is currently no better method for dechlorination of C5 resin raffinate. Bas...

AI Technical Summary

Problems solved by technology

[0002] Naphtha is cracked in the ethylene industry chain, and the by-product of the cracking is cracked C5, which can be used in the production of C5 resin, but chlorine-containing additives are needed in the production process of C5 resin, so in During the production of C5 resin, the C5 resin raffinate will contain a certain amount of chlorine. When the chlorine content in the C5 resin raffinate is higher than 10 μg / g, the C5 will be hydrogenated after the second stage. Organochlorine is converted into hydrogen chloride, and the hydrogen chloride produced will cause certain corrosion to equipment, pipelines, etc., resulting in greater safety hazards in the production process

However, there is currently no better method for the dechlorination of C5 resin raffinate

Images