The acid production process from coking desulfurization waste liquid is an important environmental protection and resource utilization technology, with the main purpose of converting the desulfurization waste liquid generated during the coking process into useful sulfuric acid products while reducing environmental pollution. The following are the main steps and characteristics of this process:
1、 Process Overview
The acid production process from coking desulfurization waste liquid usually includes several key steps such as pretreatment, incineration, purification, conversion, and absorption. This process converts sulfur elements in desulfurization waste liquid into sulfuric acid through a series of chemical reactions and physical treatments, achieving the resource utilization of waste liquid.
2、 Main steps
one Preprocessing
Filter and concentrate the desulfurization waste liquid to remove impurities and moisture.
The concentrated desulfurization waste liquid and solid sulfur obtained are used as raw materials for subsequent incineration.
two Burning
Send the pre treated desulfurization waste liquid and solid sulfur and other raw materials into the incinerator for incineration.
By incineration, the sulfur element in the raw materials is converted into gases such as sulfur dioxide (SO2).
three Waste heat recovery
The high-temperature flue gas generated during the incineration process enters the waste heat boiler to recover waste heat and generate steam.
Steam can be used for subsequent processes or as an energy supply.
four Purification
The flue gas generated from incineration is subjected to cooling, dust removal, and cleaning treatment through equipment such as humidification towers, cooling towers, and cleaning towers.
Most impurities in the purified flue gas are removed, providing qualified raw material gas for subsequent conversion processes.
five Conversion
The purified flue gas enters the converter, and under the action of the catalyst, sulfur dioxide (SO2) is oxidized to sulfur trioxide (SO3).
The conversion process is one of the key steps in the acid production process, and its conversion rate directly affects the final output and quality of sulfuric acid.
six Absorption
The converted sulfur trioxide (SO3) comes into contact with water vapor and is cooled before being absorbed by concentrated sulfuric acid to produce sulfuric acid products.
The generated sulfuric acid product can meet the standards of industrial sulfuric acid and be used for various purposes after subsequent processing.
III. Technical Features
one Resource utilization
The conversion of coking desulfurization waste liquid into useful sulfuric acid products has achieved the resource utilization of waste liquid.
two Significant environmental benefits
Reduced the pollution and discharge of desulfurization waste liquid to the environment, in line with the requirements of national environmental protection policies.
three Good economic benefits
The sulfuric acid products produced have high market value and can bring certain economic benefits to enterprises.
four Mature and reliable technology
After years of research and practical application, this process is mature, reliable, and easy to operate.
4、 Application prospects
With the continuous improvement of environmental protection requirements by the country and the continuous development of the coking industry, the acid production process from coking desulfurization waste liquid will have broader application prospects. In the future, this process will be continuously optimized and improved to increase the production and quality of sulfuric acid and reduce production costs. At the same time, this process will also make greater contributions to the sustainable development and environmental protection of the coking industry.
