scholarly journals DEVELOPMENT AND TEST OF CORN STRAW KNEADING AND CONVEYING DEVICE

2021 ◽  
Author(s):  
Aijun Geng ◽  
Ang Gao ◽  
Yinuo Zhang ◽  
Ji Zhang ◽  
Zhilong Zhang ◽  
...  
Keyword(s):  
Orthogonal Test ◽  
Optimum Combination ◽  
Utilization Rate ◽  
Shaft Speed ◽  
Corn Straw ◽  
Comprehensive Utilization ◽  
Minor Factor ◽  
Whole Plant ◽  
Main Factors ◽  
Working Parameters

Aiming at the low comprehensive utilization rate of corn straw resources, a straw kneading and cutting conveyor suitable for corn harvester was designed to improve the utilization rate of corn straw resources. The workbench module of ANSYS is used to carry out modal analysis of the two blades, and it is determined that the vibration frequency will not cause damage to the blade sweeping bore. By changing the structure of the movable blade shaft, the speed of the blade shaft can be reduced while ensuring the effect of straw crushing and collecting. In order to determine the best working parameters, three-factor and three-level orthogonal test was carried out with blade arrangement, blade shaft speed and length of feed straw as test factors, and the crushing rate of straw as evaluation index. The results show that the main factors influencing the crushing rate of straw are blade shaft speed, blade arrangement and the minor factor is the length of feed straw. Finally, the optimum combination parameters, blade arrangement, blade shaft speed 400 r/min and whole plant feed with straw, were determined. The corresponding straw crushing rate was 96.39%. The research meets the requirements of straw crushing and can provide technical scheme for comprehensive utilization of corn straw.

Study on the Saccharification Conditions of Fuel Ethanol from Corn Straw

2014 ◽  
Vol 672-674 ◽  
pp. 172-176
Author(s):  
Min Zhang ◽  
Jin Yang Li ◽  
Hai Bin Fu
Keyword(s):  
Reaction Time ◽  
Ethanol Production ◽  
Reaction Temperature ◽  
Fuel Ethanol ◽  
Orthogonal Test ◽  
Optimal Combination ◽  
Hydrolysis Rate ◽  
Temperature Reaction ◽  
Corn Straw ◽  
Main Factors

To study the saccharification conditions of cellulase on lignocellulose material, this paper used corn straw as the material to do research on the effect of cellulase. The hydrolysis factors, including reaction temperature, reaction time and cellulase concentration, were measured in order to determine the optimal saccharification conditions for fuel ethanol production. The results showed that, when the reaction temperature was 45°C, reaction time was 72 h and cellulase concentration was 60 IU/g, the hydrolysis rate can respectively reach 6.25 %, 14.7 % and 14.4 %. By the analysis of orthogonal test, the main factors effects the saccharification was reaction time. And the optimal combination of saccharification conditions was the reaction time of 54 h, the reaction temperature of 45 °C, and the cellulase concentration of 55 IU/g.

Linear Rail Space Dynamic Scheduling Technology for Multi-Tasking Hybrid Assembly Sections

2012 ◽  
Vol 271-272 ◽  
pp. 650-656
Author(s):  
Zhi Bing Lu ◽  
Ai Min Wang ◽  
Cheng Tong Tang ◽  
Jing Sheng Li
Keyword(s):  
Production Scheduling ◽  
Dynamic Scheduling ◽  
Scheduling Algorithm ◽  
Real Data ◽  
Utilization Rate ◽  
Filter Method ◽  
Scheduling Problem ◽  
Rule Based ◽  
Comprehensive Utilization ◽  
Space Production

For the rapid response to production scheduling problem driven by high-density production tasks, a dynamic scheduling technology for the large precision strip products assembly with a mixture of task time nodes and line-rail space is proposed. A scheduling constrained model containing coverage, proximity, timeliness and resource is established. A linear rail space production scheduling technology using heuristic automatic scheduling and event-driven method is put forward. The time rule based on delivery and single completion assembly is formed, at the same time the space rule based on the adjacent rail and comprehensive utilization is researched. Supposing the privilege of single product assembling as the core, the scheduling parts filter method based on multiple constraints and former rules. For the space layout problem, a clingy forward and backward algorithms is proposed to judge the assemble position regarding the space comprehensive utilization rate. The classification of the various disturbances in the actual production is summarized. Three basic algorithms are proposed, including insertion, moving and re-scheduling algorithm, in order to solve the assembly dynamic scheduling problem driven by production disturbance events. Finally, take rocket as the example， the rocket assembly space production scheduling system is developed, combining with the proposed algorithm. The practicability of the system is validated using real data.

Study on Preparation of Super Clean Coal with Selective Flocculation-Flotation Technology on Taixi Anthracite

2011 ◽  
Vol 383-390 ◽  
pp. 6139-6144
Author(s):  
Jin Xia Zhang ◽  
Shu Xian Liu ◽  
Yi Miao Nie ◽  
Fu Sheng Niu
Keyword(s):  
Experimental Methods ◽  
Optimum Combination ◽  
Pulp Density ◽  
Test Results ◽  
Selective Flocculation ◽  
Clean Coal ◽  
Order Interaction ◽  
The Future ◽  
Main Factors ◽  
Coal Petrology

Based on the coal petrology character of Taixi anthracite, the selective flocculation-flotation preparation of super clean coal is studied. The influences factors of the type and dosage of dispersant, the type and dosage of flocculant, pulp density etc etc on its effect is analyzed, and, through the orthogonal experimental methods, the salience order, interaction, and the optimum combination of the main factors is revealed. The finally test results indicate that we can obtain an ash about 1.29% at a yield of 41.85%％ super clean coal, thus will provide basis for the future super clean coal industrialization.

scholarly journals Preparation and Characterization of Dyed Corn Straw by Acid Red GR and Active Brilliant X-3B Dyes

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3483 ◽  
Author(s):  
Li ◽  
Wang ◽  
Yang ◽  
Liu ◽  
Guo
Keyword(s):  
Corn Straw ◽  
Covalent Bonds ◽  
Dyeing Properties ◽  
Structure And Stability ◽  
Water Washing ◽  
Main Factors ◽  
Light Resistance ◽  
Dyeing Rate

Corn straw is a kind of biomass material with huge reserves, which can be used in plate processing, handicraft manufacturing, indoor decoration, and other fields. To investigate the dyeing mechanism of corn straw with different dyes, corn straw was pretreated and dyed with Acid Red GR and Brilliant Red X-3B. The dyeing properties and light resistance of the two dyes were analyzed by dyeing rate, photochromaticity, FTIR, SEM, and water-washing firmness. The results showed that the structure and stability of the dyes were the main factors which influenced fading. A bleaching pretreatment could remove the waxiness of the corn straw epidermis and increase the porosity on the surface of the straw, which accelerated the photochromic coloring of the corn straw skin. The corn straw dyed with both dyes had good light resistance, but the straw dyed with Reactive Brilliant Red X-3B had higher dyeing rate, brighter color, and higher photochromaticity than the straw dyed with Acid Red GR. FTIR and water-washing firmness showed that Acid Red GR mainly bound to lignin, while Reactive Brilliant Red X-3B mainly bound to cellulose, hemicellulose, and lignin in corn straw through covalent bonds, which increased the coloring rate.

scholarly journals Study on comprehensive utilization and management of tunnel slag in Expressway

2020 ◽  
Vol 145 ◽  
pp. 02033
Author(s):  
Xiaodong Shang ◽  
Zhiqiang Liu ◽  
Jianhao Zheng ◽  
Wei Wang ◽  
Haifeng Jiang
Keyword(s):  
Project Planning ◽  
Ecological Environment ◽  
Utilization Rate ◽  
Scientific Management ◽  
Land Occupation ◽  
Comprehensive Utilization ◽  
And Control ◽  
Slag Waste

Based on the investigation of the comprehensive utilization technology of tunnel slag in expressway, the author finds that combining with the characteristics of the project, planning scientific management content, formulating reasonable utilization principles, and implementing the measures and control of the tunnel slag gravel yard and the waste slag yard can improve the recycling utilization rate of tunnel slag, reduce the amount of tunnel slag waste, reduce the land occupation and damage the ecological environment.

Research on GA-DPSO Virtual Machine Scheduling Algorithm Based on Comprehensive Utilization of Host Resource

2013 ◽  
Vol 791-793 ◽  
pp. 1373-1376
Author(s):  
Shu Huang ◽  
Jing Bo Yang ◽  
Hui Jie Ding
Keyword(s):  
Virtual Machine ◽  
Particle Swarm Optimization Algorithm ◽  
Scheduling Algorithm ◽  
Utilization Rate ◽  
Business Systems ◽  
Management Level ◽  
Comprehensive Utilization ◽  
Virtualization Technology ◽  
Optimum Balance ◽  
Host Resource

Virtualization technology has been widely used. Modern data center uses different equipments to support a large number of business systems. Whether the resources scheduling of virtual machine can be realized has become a very important issue, which will reflect the data centers management level of intelligence, intensiveness and automation. On the basis of comprehensive utilization of the physical machines various resources, the algorithm combines the advantages of genetic algorithm with particle swarm optimization algorithm, with reference to model of load balancing scheduling system, constantly adjusts to the load on the host, and consequently achieves the optimum balance of comprehensive utilization rate of different host resources.

Life Cycle Inventory of Gangue as Alternative Raw Materials

2015 ◽  
Vol 814 ◽  
pp. 533-538
Author(s):  
Zhen Guo Peng ◽  
Xian Zheng Gong ◽  
Yu Liu ◽  
Chen Li ◽  
Xiao Liu
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Coal Mining ◽  
Life Cycle Inventory ◽  
Raw Materials ◽  
Economic Value ◽  
Calorific Value ◽  
Solid Wastes ◽  
Utilization Rate ◽  
Comprehensive Utilization

With the development of science and technology and industry level, solid wastes are fully utilized. Among which gangue is the solid waste generated in the process of coal mining, its comprehensive utilization rate is more than 60%. Environmental pollution in the process of coal mining is one of the typical environmental problems confronted in China. In this paper, the life cycle inventory (LCI) of gangue was acquired by the method of life cycle assessment and further environmental impact assessment was achieved as well. The results showed that environmental impacts based on allocation of calorific value were greater than that of economic value, and it’s about 3.68 times the impacts assigned by economic value. Therefore allocation of economic value was better.

scholarly journals Sensitivity analysis of crude oil’s physical properties to total freezing time

2020 ◽  
Vol 24 (6 Part A) ◽  
pp. 3735-3747
Author(s):  
Yang Liu ◽  
Ying Xu ◽  
Xiaoyan Liu ◽  
Qinglin Cheng ◽  
Xin Nie ◽  
...  
Keyword(s):  
Heat Transfer ◽  
Crude Oil ◽  
Solution Method ◽  
Convection Heat Transfer ◽  
Orthogonal Test ◽  
Maximum Temperature ◽  
Physical Parameters ◽  
Freezing Time ◽  
Factors Affecting ◽  
Main Factors

The physical parameters of crude oil are one of the main factors affecting the heat transfer of phase change. A mathematical model for a hot oil overhead pipeline was established, taking latent heat impact, the non-Newtonian properties of crude oil, and nature convection heat transfer into account. Compared with the experimental data, the model and the solution method were correct. A criterion was made to estimate the crude oil total freezing in a pipeline by tracking the change trajectory of the maximum temperature point. The effects of the crude oil with average properties on the total freezing time in a pipeline were analyzed, and the sensitivity of the different influencing factors was investigated by orthogonal test.

scholarly journals Effects of flavonoids extracted from the whole plant of Patrinia Villosa (Thunb) Juss in a rat model of chronic pelvic inflammation

2017 ◽  
Vol 16 (10) ◽  
pp. 2395-2401
Author(s):  
Xiao-xiao Li ◽  
Cui-fang Hao ◽  
Yuan-qi He ◽  
Hai-ning Liu ◽  
Xiao-na Li
Keyword(s):  
Real Time ◽  
Inflammatory Cytokines ◽  
Rat Model ◽  
Orthogonal Test ◽  
Gelatin Sponge ◽  
Enzyme Linked Immunosorbent Assay ◽  
Group Model ◽  
Total Flavonoids ◽  
Mrna Levels ◽  
Whole Plant

Purpose: To investigate the effects of total flavonoids (PLV) extracted from the  whole plant of Patrinia Villosa (Thunb.) Juss (PTJ) in a rat model of chronic pelvic inflammation.Methods: An orthogonal test design was employed to optimize the extraction  conditions of PLV via reflux extraction by ethanol. Rats were randomly divided into control group, model group and PLV groups. An absorbable gelatin sponge with  pathogens was inserted into the cervix of the rat to establish a pelvic inflammatory model. The PLV groups were orally administered PLV at doses of 25, 50 and 100 mg/kg for eight days. Enzyme-linked immunosorbent assay (ELISA) was used for the determination of inflammatory cytokines in rat serum and the culture  supernatant of RAW264.7 cells. Real-time reverse transcription polymerase chain reaction (real-time PCR) was employed to determine mRNA levels.Results: The optimum extraction conditions for PLV by orthogonal test were  obtained: extraction time (120 min), ratio of liquid to raw material (20 mL/g) and ethanol concentration (50 %). By treating with PLV, the levels of TNF-α, IL-6 and IL-1β significantly decreased (p < 0.01), while IL-10 level significantly increased (p < 0.01) in the serum of chronic pelvic inflammatory rats and LPS-stimulated  macrophages. In addition, a similar trend was observed in the mRNA levels of LPS-stimulated macrophages treated with PLV.Conclusion: PLV showes significant anti-inflammatory effects on chronic pelvic inflammation. The potential mechanism is related to regulating the expression of inflammatory factorsKeywords: Patrinia Villosa (Thunb.) Juss, Total flavonoids, Chronic pelvic  inflammation, Inflammatory cytokines

scholarly journals Mineralogical Characteristics of Phosphate Tailings for Comprehensive Utilization

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Song Mao ◽  
Qin Zhang
Keyword(s):  
Chemical Properties ◽  
Potassium Feldspar ◽  
Coarse Grain ◽  
Factors Affecting ◽  
Comprehensive Utilization ◽  
Mineralogical Characteristics ◽  
Occurrence State ◽  
Main Factors ◽  
Physical And Chemical ◽  
And Chemical Properties

The mineralogical characteristics of a phosphate tailing were studied, and the occurrence state, mineral types, and embedded characteristics of phosphorus in the phosphate tailings were ascertained. The results show that the main minerals in the phosphate tailings are collophane. The main gangue minerals are quartz, dolomite, calcite, a small amount of potassium feldspar, plagioclase, chlorite, etc. Monazite was found in phosphate tailings. In addition, the coarse grain size of quartz and feldspar and fine embedded particle size of calcite and dolomite are also the main factors affecting the mineral processing of phosphate tailings. According to the analysis of mineralogical characteristics, the physical and chemical properties of phosphate tailings provided the basis for comprehensive utilization of phosphorus resources.

Sign in / Sign up

Export Citation Format

Share Document