Hebei Shenghua Chemical Energy-saving and Emission-reduction Project Hydrogen Recovery Unit Put into Operation
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The calcium carbide process polyvinyl chloride technology has the environmental protection problem of tail gas emission of vinyl chloride distillation, which not only causes environmental pollution but also causes the waste of vinyl chloride resources. As early as 2007, Hebei Shenghua completed and put into operation a pressure swing adsorption vinyl chloride gas recovery unit, which reduced the emissions of vinyl chloride and acetylene in the exhaust gas to 30 ppm or less and 100 ppm or less. In order to make effective use of tail gas resources and further realize the goal of energy conservation and emission reduction, in December 2009, the company adopted a new set of pressure swing adsorption hydrogen recovery device, which uses atmospheric pressure to recover and purify and efficiently remove nitrogen. The molecular sieve removes the impurity content of hydrogen, and the purity of the recovered hydrogen can reach 99.99%. According to preliminary estimates, at present, the device can recover 120-150 cubic meters of hydrogen discharged per hour from the vinyl chloride synthesis production system.
Hebei Shenghua vinyl chloride synthesis hydrogen recovery unit investment only 1.9 million yuan, small investment, large efficiency, easy operation, smooth operation, to the new device into a new vitality, received significant results in one fell swoop four: First, through the vinyl chloride The recovery of hydrogen in the synthetic tail gas greatly increases the synthetic amount of vinyl chloride, thereby increasing the output of the polyvinyl chloride resin. Second, the recovered hydrogen is transported to the synthesis process and the chlorine gas is fully combusted, which reduces the chlorine production and effectively relieves the liquid. Chlorine sales pressure; Third, the recovery of hydrogen in vinyl chloride tail gas, will undoubtedly bring considerable economic benefits to the enterprise; Fourth, all recycling of vinyl chloride synthesis gas, to achieve turning waste into treasure, energy saving for Hebei Shenghua reduction Rows add new highlights.