Issue 14/2014 - Xinjiang Tianye achieves mercury emission reduction through two achievements

Xinjiang Tianye achieved mercury emission reduction in two achievements

Recently, the integrated technology and products formed by the two achievements of mercury solid catalyst and vapor phase mercury removal technology independently developed by Xinjiang Tianye Group have been put into use in Tianye million tons of polyvinyl chloride plant, and have achieved good economic benefits
.
As a national circular economy education demonstration base and cleaner production demonstration enterprise, Tianye Group has always adhered to the innovation-driven strategy to vigorously promote mercury pollution prevention and control
.

Its self-developed mercury solid catalyst has the characteristics of low mercury chloride content, good mercury solidification effect and high conversion efficiency, and has successively won the
titles of national key new product and China Patent Excellence Award.
The mercury solid catalyst independently developed by Tianye Research Institute uses a special process to load mercuric chloride on the activated carbon carrier, and its mercuric chloride content is less than 6%, which belongs to the range of
low mercury catalyst.
At the same time, the mercury solid catalyst reduces the sublimation rate of mercuric chloride in the catalyst by adding other co-catalytic components, and compared with the traditional high mercury catalyst, the mercuric chloride content decreases from 10.
5%~12% to about 5.
5%, a decrease of more than
50%.
。 If the mercury solid catalyst controls the amount of mercury from the source and reduces the amount of mercury by 50%, then the high-efficiency gas phase mercury removal process technology is through the research of high-efficiency adsorption process and new adsorption materials, the use of special adsorption materials can effectively adsorb mercuric chloride in the outlet gas of the converter, reduce the mercury content in the waste acid of the combination tower, the water washing tower and the waste alkali of the alkali washing tower, effectively reduce the difficulty of subsequent treatment of mercury-containing wastewater, and realize the control
of mercury loss in the production process.
This technology can increase the mercury removal efficiency to more than
90%.

The combined use of these two technologies can achieve an overall mercury recovery efficiency of about 95%, promoting the improvement
of cleaner production in the PVC industry.

(Wang Meng)