A refrigeration absorbent and waste heat-driven absorption deep refrigeration method

Abstract

The invention discloses a refrigeration adbsorbent and a residual heat driveresidual-heat-driven adbsorbing type deep refrigeration method thereof. The refrigeration adbsorbent is prepared from the following components of ammonia, lithium chromate, sodium iodide, potassium hydroxide, and dimethylformamide. Compared with the prior art, the refrigeration adbsorbent has the advantages that the thermodynamics characteristics of low specific heat capacity, high heat conductivity and the like are realized; the defects of easiness in crystallizing and high refrigeration temperature in the a lithium bromide unit, failure to prepare under the working condition of below 0 DEG C or below, and failure to realize continuous running due to entrapping of water vapor in the refrigeration unit with a single ammonia water working medium are overcome; the working is stable, the efficiency is high, the entrapping of the working medium is avoided, the easiness in crystallizing is avoided, and the like; therefrigeration adbsorbent is suitable for being applied to the industries of chemical engineering, oil refining, metallurgy, power and the like, and the low-grade residual heat and waste heat producedin the industrial process are recycled and converted into effective cold energy.

Description

technical field [0001] The invention relates to the technical field of energy recovery and utilization, in particular to a refrigeration absorbent and a waste heat-driven absorption deep refrigeration method. Background technique [0002] At present, there is a large amount of low-grade waste heat in the industrial production process, mainly in the form of by-product low-pressure steam, steam condensate or flue gas. This part of waste heat is difficult to recycle through existing technologies because of its low-temperature and low-pressure characteristics. At the same time, it cannot be directly discharged into the environment, and can only be treated by circulating cooling water to cool down. On the other hand, in the process of industrial production, there is often a large amount of sub-zero cooling capacity demand. The existing process often uses electric-driven screw compressor units for refrigeration to meet the process requirements. Chemicals have serious damage to th...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a refrigeration absorbent and a waste heat-driven absorption deep refrigeration method to solve the technical problems of large energy consumption, environmental pollution and general refrigeration effect existing in traditional refrigeration technology

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