The deep desorption of mercury from VCM using demercurization acids is energy-intensive; can the low-pressure steam generated as a by-product of hydrogen chloride synthesis be utilized?
Thread Content
The deep desorption process for mercury removal using VCM requires a significant amount of energy; can the low-pressure steam generated as a by-product of hydrogen chloride synthesis be utilized as a heat source for this desorption process?
The steam pressure generated as a by-product in hydrogen chloride synthesis is too low, ranging around 0.2–0.35. Deep desorption requires a higher steam pressure; this issue should be discussed with the hydrochloric acid desorption supplier. It would be better to use the by-product steam in applications such as lithium bromide refrigeration; that might be a good option.
The pressure of the by-product steam from the hydrogen chloride synthesis furnace is too low to be used for the deep desorption of hydrochloric acid.
The pressure of the by-product steam from the hydrogen chloride synthesis furnace is too low, at around 3 kilograms, whereas the hydrochloric acid distillation reboiler requires a steam pressure of about 7 kilograms; therefore, it cannot be used for the deep desorption of hydrochloric acid at present
The steam generated as a by-product of the synthesis furnace has a pressure of about 0.3 MPa and a temperature of around 132.5 degrees. The temperature required for the deep dehydration of hydrochloric acid is approximately 160 degrees; therefore, the steam from the synthesis furnace cannot be used for this process.
The steam pressure generated as a by-product in our synthesis furnace is only 0.15–0.2 MPA, and it is used for lithium bromide refrigeration
The low-pressure steam generated by our branch plant is mainly used to heat the vinyl chloride hot water tanks.
My workshop uses low-pressure hydrogen chloride steam, with a pressure of around 2 kilograms and a flow rate of 6,000 to 7,000. The amount of hydrogen chloride recovered is 700 cubic meters; the pressure that the reactor bottom can withstand is 4 kilograms, so the recovery rate is not very good. By the way, fellow sailors, does anyone know what the optimal temperature for the tower bottom in desorption should be? (The temperature currently controlled by our factory is around 110°C), thank you
ZS-08 mercury-removing adsorbent: This product is manufactured using proprietary technology developed independently, advanced production equipment, high-quality raw materials, and special manufacturing processes to create an effective mercury-removing adsorbent. This product is widely applicable to flue gases from natural gas and coal-fired power plants, as well as other waste gases containing mercury. It is also particularly suitable for treating low-concentration mercury-containing gases that cannot be removed by other methods, so as to bring them to or below **emission standards. Special mercury-removal adsorbents with customized specifications can also be developed and produced according to the actual requirements of users. This product is an innovative one developed independently by our company’s technical researchers through years of hard work; it is protected by relevant intellectual property rights. After being used in mercury removal systems for natural gas/gas containing mercury both domestically and internationally, its mercury removal efficiency and various performance metrics have reached advanced levels. It has contributed to the development of environmental protection efforts and technological progress in China. Nanjing Zhengsen Huan Dian Technology Co., Ltd. 025-57391058