Waste heat comprehensive utilization device during the production process of fumaric acid

Abstract

The invention provides a waste heat comprehensive utilization device during the production process of fumaric acid, and belongs to waste heat recycling equipment. The waste heat comprehensive utilization device comprises a steam pocket communicated with steam displaced through exothermic reaction in a fumaric acid workshop, a steam header pipe and a steam branch pipe which are connected with other steam application workshops for production of the fumaric acid, wherein, a steam pocket pipe is connected with a steam accumulator; the steam header pipe is connected on the steam accumulator; and the steam accumulator is connected with a lithium bromide refrigerating machine via another pipe. In the invention, by adding the steam accumulator, steam load and heat accumulation can be stabilized; the excessive steam is taken as a driving heat source; the lithium bromide refrigerating machine is used for producing low-temperature circulating cooling water for cooling use in the workshops; and meanwhile steam condensate is recycled so that thermal energy and water resource can be utilized maximally, thus saving energy and production cost.

Description

technical field [0001] The invention relates to waste heat recycling equipment, and the technical field belongs to waste heat comprehensive utilization devices in the production process of fumaric acid. Background technique [0002] During the fumaric acid production process, the steam displaced by the exothermic reaction in the fumaric acid workshop is collected by the steam drum and then enters the steam main pipe and steam branch pipes and then enters the use units of other workshops. The steam production of the fumaric acid workshop is 20 tons / hour, and the steam production is uniform, and the total steam consumption of each workshop fluctuates from 6 to 35 tons / hour. Due to the steam consumption characteristics of the workshop unit: the gap and the amount are not stable, resulting in fluctuations in steam pressure, which in turn affects the production operation and control of the fumaric acid workshop. When the steam consumption is large in a short period of time, the ...

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Problems solved by technology

Due to the steam consumption characteristics of the workshop unit: the gap and the amount are unstable, resulting in fluctuations in steam pressure, which in turn affects the production operation and control of the fumaric acid workshop

When the steam consumption is large in a short period of time, the steam volume in the steam drum is not enough, and steam needs to be supplied by the thermal power plant, but most of the time the steam consumption is small, and the excess steam will be directly emptied from the steam drum through the pipeline, resulting in waste of heat energy and water resources

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