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Emission-free production technology for sulfonate additive

A technology of sulfonate and production process, which is applied in the field of non-emission production process of sulfonate additives, can solve the problems of waste gas and wastewater discharge polluting the environment, wasting resources, etc., and achieve the effect of solving environmental pollution

Active Publication Date: 2014-06-18
NINGXIA CHUANNENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a non-emission process for the production of sulfonate additives. The whole process can realize green production without external discharge, and solve the problems of waste gas and wastewater discharge polluting the environment and wasting resources in the traditional process

Method used

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  • Emission-free production technology for sulfonate additive
  • Emission-free production technology for sulfonate additive
  • Emission-free production technology for sulfonate additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This example relates to anthracene-based sulfonate additives with anthracene oil (specifically, mono-anthracene oil) as the main raw material. The specific process conditions are as follows:

[0023] (1) Sulfonation: Add 2300kg of measured anthracene oil into reactor A to preheat to 110°C at room temperature, add quantitative 98% concentrated sulfuric acid 2000kg into reactor A through a flow meter, and control the dropping process at 0.5 h, and then raise the temperature of reactor A to 125° C., and keep the temperature for 1.5 h.

[0024] The sulfur dioxide gas generated during the reaction process is sprayed and absorbed in the acid gas absorption tower with a 10% sodium hydroxide solution. The waste lye obtained after absorption is firstly titrated with potassium hydrogen phthalate to a concentration of 5% sodium hydroxide solution, and then the waste lye is reused in the alkali mixing tank, and the liquid alkali and tap water with a mass fraction of 32% are calcula...

Embodiment 2

[0034] Blank test: no formaldehyde is contained in the hydrolyzed dilution water, 20wt.%NaOH solution is completely prepared with tap water, and the slurrying performance evaluation results of the prepared additive product are as follows:

[0035]

Embodiment 3

[0037] The formaldehyde content in hydrolyzed dilution water is 0.5%, and 20% NaOH solution is prepared with tap water, and the slurrying performance evaluation results of the prepared additive product are as follows:

[0038]

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Abstract

The invention relates to an emission-free production technology for a sulfonate additive. The emission-free production technology comprises the steps of sulfonation, hydrolysis, condensation and neutralization, and is characterized in that SO2 waste gas produced in the sulfonation step is absorbed by a sodium hydroxide solution, and then the obtained absorption liquid, fresh liquid alkali and water are prepared to form the sodium hydroxide solution with certain concentration; the sodium hydroxide solution is added into the neutralization step to be used as a raw material. Compared with the prior art, the production technology disclosed by the invention has the advantages that 1, no waste gas is emitted in a production process, and the emission-free production technology is environment-friendly; 2, the waste liquor with the tail gas is reused for production of the additive and is turned into a treasure. The production technology has the beneficial effects that waste resources can be recycled, and the environment pollution caused by production is avoided. The trial use shows that the performance of the additive produced by the emission-free technology can still meet a requirement on a transportation mode such as pumping and atomization and a combustion requirement, and the additive is suitable for coal samples in different places.

Description

technical field [0001] The invention relates to a non-emission production process for sulfonate additives. Background technique [0002] my country's energy structure is rich in coal, poor in oil, and low in gas. Coal accounts for about 70% of the total energy consumption. For a long time to come, the energy production and consumption structure dominated by coal will not fundamentally change in my country. change. The traditional coal energy utilization has brought increasingly serious environmental contradictions, so it is imperative to realize the transformation of coal utilization. During the "Twelfth Five-Year Plan" period, my country will focus on the development of coal chemical industry, with the goal of upgrading from traditional coal chemical industry to modern coal chemical industry and fine coal chemical industry. Modern coal chemical industry can not only solve the problems of similarity, poor competitiveness and overcapacity of traditional coal chemical product...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/24B01D53/78B01D53/50B01D53/14
Inventor 孙敏王苗苗曹华鹏范厚利周惠良刘万毅胡奇林
Owner NINGXIA CHUANNENG CHEM
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