Title:
SYSTEM AND PROCESS FOR INDUSTRIAL PREPARATION OF NITRIC ACID EMPLOYING MICRO INTERFACE ENHANCEMENT
Document Type and Number:
WIPO Patent Application WO/2021/047041
Kind Code:
A1
Abstract:
Disclosed are a system and a process for industrial preparation of nitric acid employing micro interface enhancement. The system comprises a reactor (1), a concentrated nitric acid generator (2) and a micro interface generator (3), among others. The process comprises causing nitrogen dioxide gas to form into micrometer-sized micro gas bubbles, and mixing the micro gas bubbles with deionized water to form a gas-liquid mixture, so as to increase the interfacial surface area between the gas phase and the liquid phase, and achieve the effect of enhanced mass transfer under preset operation conditions. Micro gas bubbles can be sufficiently mixed with deionized water to form a gas-liquid mixture, wherein the gas phase and the liquid phase are sufficiently mixed, thus ensuring the deionized water in the system can make sufficient contact with nitrogen dioxide gas, which effectively increases the reaction efficiency in the system and thus enhances nitric acid conversion rate.
Inventors:
ZHANG ZHIBING (CN)
GAO YANAN (CN)
ZHOU ZHENG (CN)
MENG WEIMIN (CN)
WANG BAORONG (CN)
YANG GAODONG (CN)
LUO HUAXUN (CN)
ZHANG FENG (CN)
LI LEI (CN)
YANG GUOQIANG (CN)
TIAN HONGZHOU (CN)
CAO YU (CN)
GAO YANAN (CN)
ZHOU ZHENG (CN)
MENG WEIMIN (CN)
WANG BAORONG (CN)
YANG GAODONG (CN)
LUO HUAXUN (CN)
ZHANG FENG (CN)
LI LEI (CN)
YANG GUOQIANG (CN)
TIAN HONGZHOU (CN)
CAO YU (CN)
Application Number:
PCT/CN2019/120123
Publication Date:
March 18, 2021
Filing Date:
November 22, 2019
Export Citation:
Assignee:
NANJING YANCHANG REACTION TECH RESEARCH INSTITUTE CO LTD (CN)
International Classes:
B01J10/00
Foreign References:
| CN110002993A | 2019-07-12 | |||
| CN101554585A | 2009-10-14 | |||
| CN102935363A | 2013-02-20 | |||
| US3425803A | 1969-02-04 |
Other References:
HU SHIHUA: "New achievements in industrial production of nitric acid", CHEMICAL WORLD, no. 4, 30 April 1964 (1964-04-30), pages 165 - 169, XP009526640, ISSN: 0367-6358, DOI: 10.19500/j.cnki.0367-6358.1960.04.007
YANPING ZHANG, SHUANGWU JING, XIANGYANG CHAI, YUANYUAN GUO: "Chenmical Intermediate TheDevelopmentandApplicationofNewTechnologyforHigh Concentrationdilutenitricacid", MODERN CHEMICAL RESEARCH, 1 April 2016 (2016-04-01), pages 51 - 52, XP055790328
YANPING ZHANG, SHUANGWU JING, XIANGYANG CHAI, YUANYUAN GUO: "Chenmical Intermediate TheDevelopmentandApplicationofNewTechnologyforHigh Concentrationdilutenitricacid", MODERN CHEMICAL RESEARCH, 1 April 2016 (2016-04-01), pages 51 - 52, XP055790328
Attorney, Agent or Firm:
BEIJING ZHONGSUO INTELLECTUAL PROPERTY AGENCY CO. LTD (CN)
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