Treatment method of desulfurization solid waste

Abstract

The invention discloses a treatment method of desulfurization solid waste. The treatment method comprises the following steps that a, sulfur paste or sulfur mud is taken to be mixed with mixed doublesalt to obtain a sulfur salt mixture; b, a sulfur-fixing agent is added into the sulfur salt mixture obtained in the step a, water is added, uniform stirring is carried out to obtain a sulfur salt mixed slurry; c, drying treatment is carried out on the sulfur salt mixed slurry obtained in the step b to obtain sulfur-containing powder; and d, storing or combustion treatment are carried out on the sulfur-containing powder obtained in the step c. According to the treatment method, thte sulfur paste or sulfur mud difficult to treat in a coking plant and mixed double salt can be mixed together to be treated at the same time, the solid waste problem of the coking plant is solved, the obtained sulfur-containing powder is loose, not prone to caking and free of caking after being stored for more than half a year, the sulfur-containing powder can be completely incinerated in the subsequent sulfuric acid or sulfite production process, energy conservation and emission reduction are achieved, meanwhile, the effect that resources are recycled is realized, and better economic benefits are brought to enterprises.

Description

technical field [0001] The invention relates to the technical field of desulfurization, in particular to a treatment method for desulfurization solid waste for sulfur paste or sulfur mud. Background technique [0002] With the further stringent national environmental protection policies, coking enterprises are facing more and more serious situations in energy saving, emission reduction and environmental protection work. How to reduce pollution and reduce emissions has always been the top priority for the development of coking enterprises. Among them, as pollutants that are difficult to treat in coking enterprises, the treatment of desulfurization waste liquid and sulfur foam is particularly important. At present, coking plants mainly use methods such as wet acid production and dry acid production to treat desulfurization waste liquid and sulfur foam. The problem of sulfur foam waste liquid treatment. [0003] However, some coking enterprises currently choose to process sul...

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Problems solved by technology

[0003] However, some coking enterprises currently choose to process sulfur foam through sulfur melting kettles or filter presses in order to recycle the sulfur foam after extracting salt and desulfurizing to obtain sulfur paste. Solid salt and sulfide can no longer be processed in a timely manner through conventional wet acid production and dry acid production, resulting in a large backlog, which not only takes up storage space, but also causes secondary pollution. Effective treatment of sulfur paste, sulfur sludge, and solid salts and sulfides

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