Evaporator suitable for steam waste heat type ORC power generation system

Abstract

The invention belongs to the technical field of waste heat recycling and power generation, and relates to an evaporator suitable for a steam waste heat type ORC power generation system. The evaporator comprises a cylindrical shell; a first tube plate is arranged on one end surface of the shell in the radial direction; a first shell cover is arranged on the outer side of the first tube plate; a first channel is formed between the first tube plate and the first shell cover; a steam inlet is formed in the position, close to the top of the first channel, of the first shell cover; a second tube plate is arranged on the other end surface of the shell in the radial direction; a second shell cover is arranged on the outer side of the second tube plate; a second channel is formed between the second tube plate and the second shell cover; a condensed water outlet is formed in the position, close to the bottom of the second channel, of the second shell cover; and a plurality of heat exchange tubes in the axial direction are arranged in the shell. The evaporator has the advantages that a plurality of tube passes are formed after tube bundles are layered, the specific volume of steam in the condensation process is decreased, the tube bundles where the condensed water flows are divided into the multiple tube passes equivalently, and therefore the flow rate of the condensed water can be increased, the heat transfer coefficient of the condensed water side can be enhanced, and the heat transfer efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical field of waste heat recovery and utilization power generation, and relates to an evaporator suitable for a steam waste heat type ORC power generation system. Background technique [0002] Waste heat refers to the limitations of history, technology, concept and other factors. Among the energy-consuming devices of industrial enterprises that have been put into operation, the original design has not been rationally utilized. Common waste heat includes high-temperature exhaust gas waste heat, cooling medium waste heat , Exhaust gas and wastewater waste heat, high temperature products and slag waste heat, chemical reaction waste heat, combustible waste gas waste liquid and waste waste heat, etc. [0003] There are many ways to recover and utilize waste heat. Generally speaking, the best way to use waste heat is to use it step by step according to the quality of waste heat and in accordance with the order of temperature...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of low efficiency and poor stability of the existing evaporator applied in the ORC power generation system, the present invention provides an evaporator suitable for steam waste heat type ORC power generation system

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