Hot air supply system and method for preparing white carbon black through rice hull gasification

By optimizing the hot air supply process of the rice husk gasification to precipitate black device, and utilizing multi-stage flue gas-to-flue gas heat exchange and mixed air treatment, the problems of complex device structure and high energy consumption were solved, thereby improving stability and safety and reducing energy consumption.

CN121950337APending Publication Date: 2026-05-01JIANGSU CTP POWER CO LTD
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Patent Information

Application Number
CN202610267796.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-06
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Existing rice husk gasification equipment for producing precipitated silica suffers from problems such as complex structure, high energy consumption, and poor operational stability, especially low flue gas separation efficiency, large heat exchanger temperature difference, poor safety, and low ash production capacity.

Method used

The system employs a rice husk gasification device, a primary gas-to-gas heat exchanger, a bag filter dust collector, a secondary gas-to-gas heat exchanger, a waste heat boiler, a mixing air device, and an SCR denitrification device. Through multi-stage flue gas-to-flue gas heat exchange and mixing air treatment, the hot air supply process is optimized, the heat exchange end difference is reduced, and the dust removal efficiency and denitrification effect are improved.

Benefits of technology

It improved the operational stability and safety of the equipment, reduced energy consumption, simplified the process, increased the production capacity of rice husk ash, and achieved efficient hot air supply.

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Abstract

The invention relates to a hot air supply system and method for preparing white carbon black through rice hull gasification. The hot air supply system comprises a rice hull gasification device, a first-stage gas-gas heat exchanger, a filter bag dust collector, a second-stage gas-gas heat exchanger, a waste heat boiler, an air mixing device and an SCR denitration device. The rice hull gasification device is used for outputting dust-containing fuel gas after rice hull gasification, and the dust-containing fuel gas is subjected to primary cooling through a primary gas-gas heat exchanger and subjected to dust removal through a filter bag dust remover to obtain clean fuel gas; the clean fuel gas is secondarily cooled by the secondary gas-gas heat exchanger and is combusted in the waste heat boiler to form high-temperature flue gas, and the high-temperature flue gas is cooled by the air mixing device and is changed into clean flue gas after passing through the SCR denitration device; clean flue gas sequentially passes through the second-stage gas-gas heat exchanger and the first-stage gas-gas heat exchanger to be subjected to heat exchange and temperature rise to form target clean flue gas, the target clean flue gas is used for preparing white carbon black, after waste heat is utilized, the target clean flue gas is directly discharged, and a chimney and an induced draft fan do not need to be used. The technical problems that in the prior art, a device is complex in process, high in energy consumption and poor in operation stability are solved.
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