Title:
ACID GENERATION ENERGY RECOVERY DEVICE AND METHOD FOR SO3-CONTAINING GAS
Document Type and Number:
WIPO Patent Application WO/2019/192173
Kind Code:
A1
Abstract:
An acid generation energy recovery device and method for SO3-containing gas. The device comprises a reaction tower (1), an evaporator (3) and an evaporation deaerator (6); a bottom portion of the reaction tower (1) is connected to the evaporator (3) by means of a circulation pump (2), and an output end of the evaporator (3) is connected to an upper portion of the reaction column tower (1) by means of a mixer (4), while another output end of the evaporator (3) is sequentially connected to an evaporator water feeding heater (5), the evaporation deaerator (6) and a desalted water preheater (7); an output pipe for SO3-containing process gas is connected to the bottom portion of the reaction tower (1). The device directly produces low-pressure steam by using heat from externally provided sulfuric acid, which is then sent to a process gas pipe before the reaction tower so as to replace part of the water added to the mixer, thereby reducing the working load of the mixer, reducing the circulating acid flow, and reducing the power consumption of the circulating pump. More importantly, the heat of low-temperature steam is converted to the heat of high-temperature concentrated acid without additional energy consumption, and same passes through the evaporator to generate more low-pressure steam of a higher pressure.
Inventors:
YU XIANGDONG (CN)
Application Number:
PCT/CN2018/112925
Publication Date:
October 10, 2019
Filing Date:
October 31, 2018
Export Citation:
Assignee:
NANJING HAILU CHEMICAL TECH CO LTD (CN)
International Classes:
C01B17/80; F22B1/16
Foreign References:
| CN108483409A | 2018-09-04 | |||
| CN207511829U | 2018-06-19 | |||
| CN207524980U | 2018-06-22 | |||
| CN207569841U | 2018-07-03 | |||
| CN207581358U | 2018-07-06 | |||
| CN207581359U | 2018-07-06 | |||
| CN103896219A | 2014-07-02 | |||
| CN103896219A | 2014-07-02 | |||
| CN103588179A | 2014-02-19 |
Attorney, Agent or Firm:
NANJING TIANHUA PATENT AGENT CO., LTD. (CN)
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