Stainless steel tube-shell type concentrated sulfuric acid cooler with thin tube sheet stage cooling and anode protection

Abstract

The invention discloses a stainless steel tube-shell type concentrated sulfuric acid cooler with thin tube sheet stage cooling and anode protection. A shell pass, a tube pass and an anode protection assembly form an independent run unit, and two ends of a cylinder of the shell pass are connected with a water tank cylinder belonging to the part of the tube pass. The stainless steel tube-shell type concentrated sulfuric acid cooler with thin tube sheet stage cooling and anode protection is characterized in that tube sheets are fixed on the inner walls of two ends of the cylinder of the shell pass through welding to form a fixed heat exchange tube bundle and sealing devices at two ends of the shell pass; the tube sheets are positioned at the inner sides of the outer edges of the inner walls at two ends of the cylinder of the shell pass, and the cylinder of the shell pass and the cylinder of the water tank are connected in a sealing mode by welding; two or a plurality of the independent run units are connected in series and divided into single or a plurality of high-temperature section run systems and low-temperature section run systems with equal mount or unequal amount according to temperature. The invention can solve the technical problems of a traditional concentrated sulfuric acid cooler, such as high equipment investment expense, great abandonment loss and other technical problems, which are caused by using a great deal of stainless steel.

Description

technical field [0001] The invention relates to chemical machinery equipment, in particular to a thin tube plate subsection cooling anodic protection stainless steel tube and shell type concentrated sulfuric acid cooler. Background technique [0002] The "anodized stainless steel shell-and-tube concentrated sulfuric acid cooler" currently used in the sulfuric acid production system is a fixed tube-sheet heat exchanger, such as figure 1 shown. It is composed of a shell side and a tube side. The shell side flows concentrated sulfuric acid, flows through the inlet acid pipe, the outlet acid pipe, the acid side of the left tube plate with flange, the acid side of the right tube plate with flange, and the shell side cylinder The acid runners formed by the inside, between the heat exchange tube bundles and the baffles are all made of stainless steel. The cooling water flows through the tube side, and flows through the inlet water pipe, the outlet water pipe, the water side of th...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an improved thin tube plate segmental cooling anode protection stainless steel shell-and-tube concentrated sulfuric acid cooler to solve the equipment investment of the concentrated sulfuric acid cooler caused by the large amount of stainless steel used in the traditional concentrated sulfuric acid cooler Technical problems such as high cost and large scrap loss

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