Sulfuric acid dilution reaction apparatus comprising multi-stage cooling coil

By employing a multi-stage cooling coil design and an intelligent temperature control system, the problems of localized high temperatures and secondary reactions in the sulfuric acid dilution reaction equipment have been solved, achieving efficient cooling and high-purity sulfuric acid dilution, thereby improving the safety and output of the equipment.

CN224485570UActive Publication Date: 2026-07-14
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Filing Date
2025-08-13
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

Existing sulfuric acid dilution reaction equipment is prone to local high temperatures due to its intermittent reaction method, which puts a heavy load on the cooling system and may cause secondary reactions between concentrated sulfuric acid and derivatives, generating harmful gases and affecting product quality and yield.

Method used

It adopts a multi-stage cooling coil design, combined with continuous flow mixing and three-stage cooling. It uses cooling coils made of Hastelloy and stainless steel, along with temperature sensors and controllers to achieve intelligent temperature control, preventing secondary reactions at high temperatures. It also uses a pH detector to adjust the flow control, ensuring the accurate concentration of diluted sulfuric acid.

Benefits of technology

It significantly reduces the load on the cooling system, reduces energy consumption, prevents the generation of harmful gases, improves product purity and yield, and ensures safe and stable operation of the equipment.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application discloses a sulfuric acid dilution reaction device with multi-stage cooling coils, belonging to the field of sulfuric acid dilution reaction equipment. This sulfuric acid dilution reaction device with multi-stage cooling coils includes a diluent storage tank, a delivery pump connected to the outlet end of the diluent storage tank, and a diluted sulfuric acid storage tank. The outlet end of the delivery pump is connected to a delivery pipe, and the end of the delivery pipe is connected to a mixing pipe with a smaller diameter. The side of the mixing pipe has an air suction pipe connected to the outlet end of the concentrated sulfuric acid storage tank, and the end of the mixing pipe is connected to a buffer pipe with a larger diameter. This sulfuric acid dilution reaction device with multi-stage cooling coils replaces intermittent mixing with a continuous flow design, avoiding concentrated release of reaction heat within the container. Combined with three-stage cooling, heat is gradually dispersed, significantly reducing the load on a single-stage cooling system and reducing energy consumption. Simultaneously, it prevents secondary reactions between concentrated sulfuric acid and derivatives at high temperatures, reduces the generation of harmful gases, and improves product purity and yield.
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