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Publicity about the nomination of Anhui provincial science and technology awards in 2020 (Thermal Engineering)

Release time: 2020-05-26 15:11: the source: Hefei cement research and Design Institute Co., Ltd. Character size: [big]   [medium]   [small]

According to the Anhui provincial science and Technology Department, Anhui Ke Ji award. Two thousand and twenty ] One hundred and nineteen About development Two thousand and twenty The spirit of the Annual Nomination work of the Anhui provincial science and Technology Award "," the research and development of low nitrogen combustion technology and equipment for cement kilns "is nominated by our academy. Two thousand and twenty At the same time, the Anhui provincial science and technology award shall be publicized according to the notification requirements. Seven Days, the main publicity contents are attached.

For those who disagree with the contents, please Two thousand and twenty year Five month Twenty-six Solstice Six month Three The date is submitted to the hospital science and technology development department, and expired is regarded as unanimous. Contact: segment circle, contact telephone: Six thousand one hundred and thirty-one    

 

                                         Hefei cement research and Design Institute Co., Ltd.

Two thousand and twenty year Five month Twenty-six day

 

 

I. name of the project:

Research and development of low nitrogen combustion technology and equipment for cement kiln

Two. Nominees and nominations

Nominee: Hefei cement research and Design Institute Co., Ltd.

Nominations: " Research and development of low nitrogen combustion technology and equipment for cement kiln " It is the China Building Materials Federation founded by Hefei cement research and Design Institute Co., Ltd. The deployment of the "two two generation" Research projects.

After examination, the contents listed in this recommendation are authentic and reliable, and all columns are required to fill in and conform to the declaration requirements. In view of its innovative technology, wide application and remarkable economic benefits, the project is nominated. Two thousand and twenty year Anhui provincial science and Technology Award (technology progress class).

Three. Project brief introduction

This project belongs to Control of fuel combustion and NOx reduction in cement industry Field.

Around cement industry NOx Emission reduction technology needs for existing NOx Emission reduction technology has such problems as single technology, large fluctuation, and influence on system working conditions. NOx In the process of emission reduction, kiln low nitrogen combustion technology, development of high efficiency and low nitrogen burner and other process emission reduction technology and equipment, and implementation of engineering demonstration application on cement kiln, slow down the cement industry. NOx The pressure of pollutant terminal treatment.

In this study, the mechanism of NOx production in the kiln and kiln tail firing process in cement industry and the principle of NOx reduction in the process were studied. The energy saving low nitrogen multi-channel burner and the kiln tail oxygen poor pulverized coal burner were developed. By applying the low nitrogen burner and low nitrogen combustion technology, the nitrogen oxides in the kiln tail gas could be reduced. The purpose of quantity.

Through the combustion in rotary kiln, NOx Formation and reduction. CFD Numerical simulation is carried out to study the temperature field of rotary kiln and the influence of burner parameters such as coal feed quantity, combustion air volume and air temperature. NOx The influence rule of the concentration field is established, and the correlation model of the burner parameters and the temperature distribution of the rotary kiln and the concentration distribution of gas components is established to optimize the flame shape and temperature field distribution in the rotary kiln. Research and design of multi-channel burner equipment with on-line adjustment function, unique and effective end air duct arrangement, innovating and optimizing burner parameters, designing new outlet mode or arrangement of wind and coal, rationally optimizing the ratio of wind to coal, adjusting the wind speed, reducing the nitrogen and oxygen content in the high temperature area of the flame center, and reducing the residence time of nitrogen and oxygen in the high temperature zone. The development and application of energy saving low nitrogen burner for kiln head has been reduced. NOX The formation reaction rate reduces the target of NOx generation.

Applied CFD By means of numerical simulation and experimental research, the burning velocity, temperature field distribution and nitrogen content of coal in different layers of the furnace are studied in different areas, such as the layout of the net and the coal wind, the air volume, the wind speed and the swirling angle. NOx Release and reduction zone NOx The influence law of the reduction is designed, and the kiln tail burner with different functions for reducing area and burning area is designed. Collecting relevant production and operation data, including smoke chamber gas concentration, smoke chamber temperature, coal feed quantity, coal separation quantity, feed quantity, decomposing furnace outlet temperature, decomposition rate and so on, based on data analysis, using the neural network and other methods to establish the empirical model model, and build a hybrid nonlinear model based on the gas characteristic component concentration, temperature and other parameters to regulate the coal separation quantity, and develop the staged combustion control system. The system realizes the application of low nitrogen combustion technology and equipment in calciner.

Four, objective evaluation

The key technical innovations of the project are as follows:

(1) The research and development of low nitrogen combustion technology and equipment for cement kiln realizes the combination of two means, namely, reducing nitrogen oxides and reducing nitrogen oxides generated by kiln tail reduction, so as to achieve joint control and reduce the content of NOx in flue gas.

(2) A primary air volume has been developed. <7 Kiln head with high strength hot flue gas reflux HP The energy saving and low nitrogen burner is used to dilute the oxygen concentration in the volatile combustion zone and reduce the amount of nitrogen oxides in the rotary kiln.

(3) The calciner burner with different functions in different areas of calciner calciner is used to make full use of the staged combustion effect, which not only meets the technological demand of heat transfer and decomposition of raw meal, but also reduces the maximum extent. NOx Concentration.

(4) An angle adjustable material spreading box is developed. The raw material can be sprinkled to the ideal area according to the temperature of the furnace bottom to adjust the angle of the distributor. The temperature inside the decomposing furnace is normal, the pressure is stable, and the adverse effects such as crust, collapse and ball are eliminated.

Five. Popularization and application, economic and social benefits.

Since the successful implementation of the project, the research results obtained have been applied in Shandong mountain aluminum India Cements Limited, Jin Gang (Group) Baishan, India Cements Limited and other places. All users have achieved good results and achieved or exceeded design capability. The application units of some projects are as follows:

Serial number

App Co name

One

Shandong aluminum India Cements Limited

Two

King Kong (Group) Baishan India Cements Limited

Three

Wuhu South Cement Company Limited

Four

Lingyuan North Cement Company Limited

Five

Anji South Cement Company Limited

Among them, the Shandong mountain aluminum India Cements Limited uses the kiln tail low nitrogen combustion technology and equipment after control. NOx Under lower emission concentration, ammonia consumption is more than single use. SNCR The denitration measures were reduced. 55.5% After application of low nitrogen combustion technology in Baishan India Cements Limited, Jinggang Group Co. NOx When ammonia concentration is equal, ammonia consumption is more than single use. SNCR The denitration measures were reduced. 55.7% Low nitrogen combustion technology reduces NOx The efficiency has been achieved. 30.7% Before and after the company's transformation, the cost of ammonia water running from ton clinker is determined. Four point two four Yuan down One point eight eight Yuan, that is, ammonia water to save costs. Two point three six element / Tons of clinker. Annual production of clinker Eighty-five Million tons of ammonia per year to save costs Two hundred point six Ten thousand yuan.

The low nitrogen combustion technology of cement kiln can not only benefit the enterprises from energy saving and consumption reduction, but also is a clean technology, without any solid or liquid pollutants or by-products generated, without two pollution, and less investment in the early stage, which is in line with the national industrial policy and has significant social benefits.

Six. Publish articles and major intellectual property rights.

One Article

One

Sustainable development of energy saving and emission reduction in building materials industry

Two thousand and nineteen The first Nineteen stage

Development direction of building materials

ISSN1672-1675

Two Patents

Outcome category

Result content

Completion status

New practical patent acquired

One

A multi-channel pulverized coal burner. ZL201320780846.2

Authorized

Two

Angle adjustable sprinkled device. ZL201720442739.7

Authorized

Seven. Mainly completes the human condition.

Serial number

Full name

Gender

Education

major

Technical title

the unit to which one belongs

Project division

One

Liu Yin Jie

male

Undergraduate

Inorganic nonmetallic materials

intermediate

Hefei cement research and Design Institute Co., Ltd.

The project leader is responsible for the formulation, organization and coordination of the plan, undertaking research and prototype audit, on-site commissioning, compiling evaluation data, etc.

Two

Du Jia Jia

male

master

mechanical engineering

intermediate

Hefei cement research and Design Institute Co., Ltd.

The project leader is responsible for organizing and coordinating, undertaking research and development, simulation, data analysis and on-site commissioning of the prototype.

Three

Plum pine

male

Specialty

mechanical engineering

Senior Manager

Hefei cement research and Design Institute Co., Ltd.

Participate in the formulation of the plan, bear the prototype mechanical design, compiling evaluation data, etc.

Four

Song Bai Xu

male

Undergraduate

mechanical engineering

Senior Manager

Hefei cement research and Design Institute Co., Ltd.

Participate in the formulation of the plan, bear the prototype mechanical design, compiling evaluation data, etc.

Five

Tang Xian Guo

male

Undergraduate

Mine engineering

Senior Manager

Hefei cement research and Design Institute Co., Ltd.

Prototype supervision, processing coordination and field commissioning

Six

Zhang Xian Cheng

male

Specialty

Cement process

Technician

Hefei cement research and Design Institute Co., Ltd.

Responsible for prototype installation and field commissioning.

Eight, the main completion of the unit and the contribution of innovation and extension

Completion unit: Hefei cement research and Design Institute Co., Ltd. is responsible for experimental research, process research and development, key equipment and technology research and development, key equipment manufacturing, engineering and technical services, and scientific and technological achievements promotion.

Nine. Completion of the partnership statement

The project is mainly completed by Liu Yinjie, Du Jiajia, Li Song, Xu Songbai and Tang Xianguo as the R & D personnel of Hefei cement research and Design Institute Co., Ltd., who completed the project and became the commissioning technician of Hefei cement research and Design Institute Co., Ltd. As the project leader, Liu Yinjie, Du Jiajia and other comrades of the Department jointly completed the cooperative research on several projects such as "research and development of low nitrogen combustion technology and equipment for cement kiln", and innovating and improving the relationship between fuel combustion and NOx reduction in the cement industry to control a number of key technologies and equipment.

 

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