Chemical acid residue neutralization treatment method

A treatment method and acid slag technology, applied in chemical instruments and methods, chemical/physical processes, chemical/physical/physical chemical processes, etc., can solve the problem of affecting the neutralization effect of acid slag and Ca, increasing operating costs, and the number of product stacks It can't achieve neutrality and other problems in a month, and achieve the effect of obvious and rapid neutralization effect, simple and easy method, and low processing cost
CN108405552BActive Publication Date: 2021-04-06LANZHOU KANGSHUN PETROCHEM
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
LANZHOU KANGSHUN PETROCHEM
Publication Date
2021-04-06

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Abstract

The invention relates to a method for neutralizing chemical acid slag, in particular to a method for treating alkylated acid slag discharged from an alkylation production device. When using slaked lime to neutralize the acid solution, soil is introduced and uniformly mixed with slaked lime in advance. Lime soil is reacted with chemical acid slag under stirring conditions, and the reacted product is aged until the pH value reaches 7‑8. The products of the neutralization reaction after aging can be directly landfilled or utilized as raw materials for unburned bricks. The invention is especially suitable for the treatment of the alkylation acid slag discharged from the alkylation production device, the raw material is easy to obtain, the method is simple and easy, the neutralization effect is obvious and rapid, the treatment cost is low, and no secondary pollution is caused.
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Description

technical field

[0001] The invention relates to a method for neutralizing chemical acid slag, in particular to a method for treating alkylated acid slag discharged from an alkylation production device. Background technique

[0002] The current gasoline production is developing towards low-lead and lead-free, and alkylation is a common traditional process for producing high-octane gasoline. This process method is that the gaseous olefins and isobutane produced in the secondary processing of the refinery undergo an alkylation reaction under the catalysis of 98% concentrated sulfuric acid to generate industrial isobutane for blending high-grade gasoline. During the alkylation reaction process, the water, sulfur, nitrogen compounds and side reaction products in the raw materials continuously enter the acid phase, so that the concentration of sulfuric acid gradually decreases, and its catalytic effect gradually weakens. When the acid concentration drops to 80% to 90%, That is, i...

Claims

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