Sulfur recovery unit

By combining temperature detection and air flow adjustment in the sulfur recovery unit, the problem of methanol carrying capacity affecting sulfur production under high temperature conditions was solved, thereby improving sulfur conversion rate and reaction efficiency.

CN119680479BActive Publication Date: 2025-10-31CHINA ENERGY GRP NINGXIA COAL IND CO LTD
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Patent Information

Application Number
CN202411696632.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-25
Publication Date
2025-10-31
Estimated Expiration
2044-11-25

AI Technical Summary

Technical Problem

In existing sulfur recovery units, methanol is carried into the Claus oxidation furnace under high temperature conditions, affecting the oxygen content and air ratio, resulting in a decrease in sulfur production and instability in air ratio adjustment.

Method used

By combining a temperature detection component with a controller in the sulfur recovery unit, the air flow can be adjusted in real time to prevent methanol from entering the reaction chamber, ensuring that the reaction takes place under the most suitable conditions and improving the sulfur conversion rate.

Benefits of technology

This effectively avoids methanol consuming oxygen, maintains a stable air-fuel ratio, improves sulfur conversion rate and reaction efficiency, and reduces control lag.

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Abstract

This invention provides a sulfur recovery device. The sulfur recovery device includes a reaction section having a first reaction chamber and a first inlet, a second inlet, and a product outlet communicating with the first reaction chamber; a feeding section including a first air inlet pipe configured to introduce hydrogen sulfide gas into the first reaction chamber via the first inlet; an air inlet section for supplying air to the second inlet; a sulfur collection section including a receiving structure and a first collection pipe communicating with the product outlet; and an air distribution ratio adjustment section including a controller and a temperature detection component. The temperature detection component is disposed on the first air inlet pipe and is controlled by the controller, which is also controlled by the air inlet section to control the air flow rate supplied by the air inlet section to the second inlet. The technical solution of this invention solves the problem in existing sulfur recovery devices that affect the air distribution ratio adjustment.
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