Public Notice on the Nomination Information for the 2021 Hebei Provincial Science and Technology Award

RootAccording to the requirements of Hebei Provincial Department of Science and Technology, the following is a public announcement of the nomination project information for the Hebei Provincial Science and Technology Award in 2021 from our school.

For detailed information, please refer to the attached materials corresponding to the project name.

The announcement period is from2021year06month01day to2021year06month07day, lasting 7 days (5 working days).

Units or individuals who have objections to the announced content, please submit written objections and relevant evidence materials from the date of the announcement.

To ensure that the objections are handled truthfully and fairly, please submit objections in your real identity and in writing. Unit objections should be stamped with the official seal, and individual objections should be signed with your real name, and provide your contact address and telephone number.

Anonymous objections will not be accepted in principle.

Contact: Wang Jingfeng

Tel: 0317-7972668

Email: wangjingfeng@hbreftech.com

This is hereby announced.

Hebei Exquisite Technology

2021June 1, 2021

Announcement on the Application for the Hebei Provincial Science and Technology Award

In accordance with the "Notice on the Nomination Work for the Hebei Provincial Science and Technology Award in 2021" issued by the Office of the Hebei Provincial Science and Technology Award Committee, the following is a public announcement of the application for the Hebei Provincial Technological Invention Award for the project "New Technology for Deep Desulfurization of Liquefied Petroleum Gas with Near-Zero Waste Emission".

If you have any objections, please call or send written materials to report.

Report Tel: 13930793295

Report Email:wangjingfeng@hbreftech.com

Announcement Date: June 1-7, 2021

Project Name: New Technology for Deep Desulfurization of Liquefied Petroleum Gas with Near-Zero Waste Emission

Nominating Unit: Cangzhou Municipal Bureau of Science and Technology

Project Overview:

Liquefied petroleum gas (LPG) is an important product of the refining process. In recent years, with the slowdown in the growth of refined oil consumption and the increase in the demand for LPG in the chemical industry, the growth rate of LPG production is more than twice that of refined oil. It is estimated that the chemical demand for LPG will account for 54% of the total demand in 2023. As a raw material for deep chemical utilization, the sulfur content of LPG is required to be <10 ppm. Low desulfurization efficiency and large pollutant emissions are the key pain points that hinder the development of deep processing of LPG. Therefore, improving the efficiency of mercaptan removal and achieving green production has become a major challenge in the upgrading of LPG desulfurization technology.

Our team has successfully developed a "new technology for deep desulfurization of liquefied petroleum gas with near-zero emissions," which achieves deep desulfurization while achieving zero emissions of alkali slag and tail gas. The innovative achievements are as follows:

(1) An efficient compound alkaline solution solvent was invented, which improved the solubility of mercaptans and promoted the oxidation regeneration reaction. The key breakthroughs were the solubility problem of mercaptans and the electron transfer rate control problem in the oxidation regeneration reaction, significantly improving the desulfurization efficiency and regeneration efficiency.

(2) The "multiphase reaction fixed-bed regeneration" process was invented, and the idea of back-extraction of disulfide and catalyst immobilization was proposed, solving the problems of disulfide separation and by-product reaction generation, and reducing the total sulfur content. An innovative approach to back-extraction agent and catalyst immobilization was proposed, with disulfides being extracted and separated as they are generated during the oxidation regeneration process; immobilization reduces side reactions and controls the disulfide content in the product LPG.

(3) A zero-emission process for alkali slag and tail gas was invented. Comprehensive acid control and intermittent solvent purification achieve zero alkali slag emission; tail gas internal circulation and oxygen-enriched regeneration achieve zero tail gas emission. Only a small amount of accumulated harmful soluble acidic anions are converted into insoluble anions, and the resulting solid product can be directly recycled, resulting in zero alkali slag discharge. The invention of the tail gas internal circulation process uses oxygen-enriched air instead of air for regeneration, resulting in zero tail gas emission.

The integration of the above innovations has formed the "new technology for deep desulfurization of liquefied petroleum gas with near-zero emissions," which has solved the problems of product quality and environmental protection for enterprises. 12 Chinese invention patents and 7 utility model patents have been authorized; 20 papers have been published. It has been successfully applied in 6 enterprises. The China Petroleum and Chemical Industry Federation identified that: "The zero-emission technology for alkali slag and tail gas is highly original, and the overall technology has reached the internationally advanced level."

Application Status and Application Effects:

Since April 2017, the research results of this project have been applied in 6 refineries, solving the problem of pollutant emissions polluting the environment during the production of ultra-low sulfur LPG, and increasing the social, economic, and environmental benefits of the refineries. The application status and effects are illustrated using three application units as examples:

(1) Sinopec Luoyang Branch Co., Ltd. adopted the technology of this project and carried out modifications on the basis of the existing liquefied gas desulfurization unit. Since the operation of the project for 18 months, the processed amount of catalytic liquefied gas has been maintained at more than 75 t/h, and the calibration was carried out on the premise that the hydrogen sulfide content, mercaptan sulfur content, and total sulfur content of the raw liquefied gas were generally stable. The mercaptan sulfur content after desulfurization was 1.69 ppm on average, and the average total sulfur content was 5.53 ppm. At the same time, 900 tons of alkali slag emissions were reduced, achieving zero alkali slag emission; after solvent purification, 20 tons of solid products were produced, not only meeting various quality indicators of liquefied gas products but also improving the desulfurization effect compared with the original technology, producing LPG products with ultra-low sulfur content.

(2) Shandong Oriental Huaxin Industrial and Trade Group Co., Ltd. adopted the technology of this project and carried out modifications on the basis of the existing liquefied gas desulfurization unit. After more than one year of application, the device is operating well. In the past 18 months, about 277,200 tons of raw materials have been processed. The total sulfur content of liquefied gas after desulfurization of mercaptan has decreased from an average of 3.1 mg/Nm³to 1.1 mg/Nm³at the same time, the alkali consumption decreased by 30 tons/year compared with the original process, and the alkali slag discharge decreased by 60 tons/year. Reduced tail gas emissions by approximately 42 × 10⁴Nm³Recovered approximately 150 tons of hydrocarbons per year from the tail gas. There is no negative impact on downstream unit production, equipment operation, safety, or environmental protection.

(3) CNOOC Gas (Taizhou) Petrochemical Co., Ltd. implemented modifications using this project's technology based on its existing liquefied gas desulfurization unit. The total sulfur in refined liquefied gas ≤20 ppm, and the total sulfur in light gasoline ≤20 ppm, all indicators meet or exceed the design standards. No negative impact on other product quality indicators was found, and no negative impact was found on downstream unit production, equipment operation, safety or environmental protection. In addition, in the 39 months of operation, 3575 tons of alkali slag emissions have been reduced, achieving zero alkali slag emissions; two solvent purifications generated a total of 71.5 tons of solid products. The unit is operating well.

Main Intellectual Property Catalog:

9 patents, 1 journal article

Main Accomplishers:

Project Accomplishers: Tianzhen Hao Liang Zhao Xiaoming He Mingdong Wang Xin Cui Jianyuan Dong

1. First Accomplisher

Tianzhen Hao, Male, Professor-level Senior Engineer, Hebei Jingzhi Technology Co., Ltd. He has won the National Technological Invention Second Prize, Sinopec Science and Technology Department Excellence Award, Hebei Province Excellence Award, Cangzhou City Excellence Award, Hebei Province Youth Science and Technology First Prize, etc.

Main contributions to this project: (1) Responsible for the research and development of the proprietary solvent for deep desulfurization of LPG; (2) Responsible for the pilot test optimization of the process conditions for deep desulfurization of LPG; (3) Design and optimization of amine-based and mercaptan removal processes; (4) Cooperate with the industrial design, construction, and maintenance of the entire process equipment. Made significant contributions to innovations 1 and 2.

2. Second Accomplisher

Liang Zhao, Female, Professor, China University of Petroleum (Beijing). She has won the National Technological Invention Second Prize, the China Petroleum and Chemical Industry Federation Youth Science and Technology Outstanding Contribution Award, the 10th "Hou Debang Chemical Science and Technology Youth Award", etc.

Main contributions to this project: (1) Responsible for the basic research and development of highly efficient compounding alkali liquid solvent for petroleum liquefied gas, obtaining the optimal solvent formula; (2) Responsible for researching the generation pathways and countermeasures of disulfide, participating in the design and optimization of multiphase reaction fixed-bed regeneration technology; (3) Responsible for researching the causes and countermeasures of alkali slag and tail gas, designing zero tail gas emission and alkali slag reduction work; (4) Made significant contributions to innovations 1, 2, and 3.

3. Third Accomplisher

Xiaoming He, Male, Engineer, Hebei Jingzhi Technology Co., Ltd. His contributions to this project include: (1) Responsible for the pilot test optimization of the process conditions for deep desulfurization of LPG; (2) Design and optimization of amine-based and mercaptan removal processes; (3) Cooperate with the industrial design, construction, and maintenance of the entire process equipment; (4) Deeply involved in the application research and development of this technology and made important contributions to the industrial application of this technology.

4. Fourth Accomplisher

Mingdong Wang, Male, Senior Engineer, Sinopec Luoyang Branch. His contributions to this project include: (1) Organized the deep desulfurization of petroleum liquefied gas using this technology with petroleum liquefied gas from Sinopec Luoyang Branch as raw material to achieve zero emission of alkali slag and tail gas; (2) Assisted the technology developers in organizing relevant scheme tests and condition optimization at Sinopec Luoyang Branch; (3) Organized the review of the process package, organized the design according to the content of the process package, modified and improved the design content, and was responsible for the organization, management, and coordination of the entire process of design, procurement, construction, and production.

5. Fifth Accomplisher

Xin Cui, Male, Senior Engineer, Sinopec Luoyang Branch. His contributions to this project include: (1) Assisted in organizing the deep desulfurization of petroleum liquefied gas using this technology with petroleum liquefied gas from Sinopec Luoyang Branch as raw material to achieve zero emission of alkali slag and tail gas; (2) Assisted the technology developers in organizing relevant scheme tests and condition optimization at Sinopec Luoyang Branch; (3) Organized the review of the process package, organized the design according to the content of the process package, modified and improved the design content, and was responsible for the organization, management, and coordination of the entire process of design, procurement, construction, and production.

6. Sixth Accomplisher

Dong Jianyuan, male, engineer, Shandong Oriental Hualong Industrial Group Co., Ltd. Contributions to this project: (1) Organized the use of liquefied petroleum gas from Shandong Oriental Hualong Industrial Group Co., Ltd. as raw material, and implemented deep desulfurization of liquefied petroleum gas with zero emission of alkali slag tail gas using this technology; (2) Assisted the technology developer in organizing the testing and condition optimization of relevant schemes at Shandong Oriental Hualong Industrial Group Co., Ltd.; (3) Organized the review of the process package, organized the design according to the content of the process package, modified and improved the design content, and was responsible for the organization, management and coordination of the entire process of design, procurement, construction, and production.

Summary Table of Contributor Cooperation Relationships