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Patent Agency Ranking
公开(公告)号：US20160054056A1
公开(公告)日：2016-02-25
申请号：US14780688
申请日：2013-07-26
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Yuemin ZHAO , Xuliang YANG , Pengfei ZHAO , Zhenfu LUO , Zengqiang CHEN , Chenlong DUAN , Shulei SONG
CPC classification number: F26B3/0923 , B03B4/02
Abstract: A drying and separation integrated machine for a vibrating fluidized bed comprises a front rack (10), a rear rack (12), a separation bed (6), and a rotary plow feeder (1) disposed at the upper portion at the front end of the separation bed (6). The tail end of the separation bed (6) is provided with a waste-rock rotary plow feeder (14) and a fine-coal rotary plow feeder (8), the upper portion of the separation bed (6) is provided with a dust-removing air-induced hood (4), the bottom thereof is provided with an air distribution chamber (3), the upper portion of the air distribution chamber (3) is provided with an air distribution plate (15), and the front rack (10) and the rear rack (12) are connected to the separation bed (6) by a spring (17) and a spring support (16). The bottom of the rear rack (12) is provided with a hydraulic cylinder (13), the lower portion of the rotary plow feeder (1) is provided with a feeding distribution device (2), two dust-removing air-induced hoods (4) and two air distribution chambers (3) are respectively provided on the top and the bottom of the separation bed (6), a heat-insulation coating is sprayed on the outer surfaces of the dust-removing air-induced hood (4) and the air distribution chamber (3), and the lower portion at the front end of the separation bed (6) is provided with a separating eccentric shaft vibration exciter (9). The air distribution plate (15) is formed of upper and lower porous metal plates and asbestos-fiber filter cloth sandwiched between the porous metal plates, the bottom of each air distribution chamber (3) is provided with a gas separator (5), and the gas separators (5) are connected to a hot-air pipe (19) sprayed with a heat-insulation coating. The wet coal in the vibrating fluidized bed is fluidized by high-temperature hot air, heat transfer and mass transfer proceed between the high-temperature air and the wet coal particles, and the moisture in the coal is taken out of the vibrating fluidized bed by the fluidization gas in a form of water vapor. During drying, the coal particles are fluidized by air flow together with vibration. The drying and separation integrated machine for a vibrating fluidized bed is of a simple structure, operates stably, and has high reliability.
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公开(公告)号：US20200238337A1
公开(公告)日：2020-07-30
申请号：US15767538
申请日：2017-04-12
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Liang DONG , Yuemin ZHAO , Chenlong DUAN , Junyu LU , Bo ZANG
Abstract: The present invention discloses a coupled system and a method for separation and drying of moist fine particle coal. The coupled system comprises a blast blower, a surge tank, a moisture detection sensor, a control device and two pipelines, wherein the blast blower is communicated with the surge tank; one end of two pipelines which are connected in parallel is communicated with the surge tank, while the other end is communicated with a fluidized bed; one of the two pipelines consists of a No. 1 valve, a No. 1 flowmeter, an air heater and an electric butterfly valve which are connected in series sequentially, while the other pipeline consists of a No. 2 valve and a No. 2 flowmeter which are connected in series; the moisture detection sensor is arranged in the fluidized bed; and the control device is respectively connected with the blast blower, the No. 1 valve, the No. 1 flowmeter, the air heater, the No. 2 valve, the No. 2 flowmeter and the moisture detection sensor. The coupled system can sequentially achieve drying and separation of brown coal particles in the fluidized bed, making the upgrading separation of brown coal particles by dehydration and de-ashing done within one process flow, thereby improving the working efficiency and simplifying the process flow.
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3.发明申请公开(公告)号：US20210292672A1
公开(公告)日：2021-09-23
申请号：US16972396
申请日：2019-06-11
Applicant: China University Of Mining And Technology
Inventor： Bo ZHANG , Yuemin ZHAO , Yadong ZHANG , Guanghui YAN , Zhenfu LUO , Chenlong DUAN , Liang DONG , Enhui ZHOU
Abstract: The present invention is directed towards a process for upgrading lignite comprising: prior to production pre-assess the calorific value of the coal, by selecting a relational expression between a calorific value of lignite and a degree of metamorphism, a moisture content and an ash content thereof based on a ratio of the ash content to the moisture content, pre-assess the calorific value of the coal; combining a relational expression between a production cost and the ash content and moisture content to make a cost budget; determining degrees of deashing and drying; selecting and implementing a lignite ash reduction pretreatment process; and implementing dry sorting first and then drying. The upgrading process has high sorting efficiency, high drying efficiency and low production cost, and meets the requirement for the surface moisture of the raw coal in the dry sorting operation.
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公开(公告)号：US20220258176A1
公开(公告)日：2022-08-18
申请号：US17432486
申请日：2020-06-22
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Liang DONG , Yuemin ZHAO , Yongxin REN , Guanghui WANG , Wei DAI , Enhui ZHOU , Chenlong DUAN , Yanjiao LI
Abstract: An intelligent control method for a dry dense medium fluidized bed separator includes supplying air to fluidize a bed; estimating an initial bed density according to a washability curve of a raw coal; detecting a magnetic material content in the bed to obtain a real-time bed density, and adjusting the real-time bed density according to a result from an analysis on a deviation from the initial bed density; during separation, adjusting a medium addition amount and a scraper discharge speed to maintain a stability of a bed height; separating the raw coal in the dry dense medium fluidized bed separator to obtain a clean coal product; and detecting a product ash content of the clean coal product, comparing the product ash content with a target ash content, and if a difference between the product ash content and the target ash content exceeds an expectation, adjusting the initial bed density.
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公开(公告)号：US20220176411A1
公开(公告)日：2022-06-09
申请号：US17598890
申请日：2020-02-29
Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Inventor： Yuemin ZHAO , Jesse ZHU , Chenyang ZHOU , Zhijie FU , Zhenfu LUO , Chenlong DUAN
Abstract: Provided is a gas-solid fluidized bed dry beneficiation process using a beneficiation density gradient, including: in a dry beneficiation system of a gas-solid fluidized bed, selecting coarse particles and fine particles; placing the coarse particles at a bottom of the dry beneficiation system, and placing the fine particles above the coarse particles, wherein the coarse particles and the fine particles are separated under an initial condition; under an effect of a gas flow, the coarse particles and the fine particles being fluidized to form a high-density beneficiation region and a low-density beneficiation region, respectively, and the coarse particles and the fine particles being mixed at a contact interface to form an intermediate-density beneficiation region; and feeding minerals to be beneficiated from an upper portion of the dry beneficiation system to pass through the low-density beneficiation region, the intermediate-density beneficiation region, and the high-density beneficiation region in sequence.
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