CN102384897A - Real-time test system of active group in coal reaction process - Google Patents
Real-time test system of active group in coal reaction process Download PDFInfo
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- CN102384897A CN102384897A CN2011102350222A CN201110235022A CN102384897A CN 102384897 A CN102384897 A CN 102384897A CN 2011102350222 A CN2011102350222 A CN 2011102350222A CN 201110235022 A CN201110235022 A CN 201110235022A CN 102384897 A CN102384897 A CN 102384897A
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Abstract
The invention relates to a real-time test system of an active group in a coal reaction process, which consists of a Fourier transform infrared spectrometer, a coal sample reaction pool, a temperature control device, an air supply device, a water cooling device and a computer. The coal sample reaction pool is arrange on a test board of the Fourier transform infrared spectrometer and consists of a sample groove and a sealing cover, and the periphery of the sample groove is provided with a temperature control module interface, a water inlet, a water outlet, an air inlet and a vent port; the temperature control device comprises a control panel, a display screen, switches and a temperature control signal line which is connected with a temperature control module interface of the coal sample reaction pool; the water cooling device consists of a water pump and a water inlet pipeline and a water outlet pipeline, and the water inlet pipeline and the water outlet pipe are respectively connected with the water inlet and the water outlet of the coal sample reaction pool; the air supply device consists of an air bottle, an air inlet pipeline, an air discharging pipeline, a flow-rate controller and a stabilizer valve, wherein the air inlet pipeline and the air discharging pipeline are respectively connected with the air inlet and the vent port of the coal sample reaction pool; and the computer is connected with the Fourier transform infrared spectrometer. The real-time test system is suitable for the real-time test of active groups in the coal under different reaction conditions and is simple and convenient to operate, and the test result is accurate and reliable.
Description
Technical field
The present invention relates to the real-time testing system of coal course of reaction reactive group, be particularly useful for the real-time analysis of coal course of reaction infrared spectrum.
Background technology
Spontaneous combustion of coal is one of major casualty of facing of China's coal-mine safety in production, and China has the coal seam of spontaneous combustion tendency to account for 79.93% of working seam sum, and all there is the problem of spontaneous fire basically in the mine of state-owned emphasis coal mining thick seam.Carry out the research of coal spontaneous combustion mechanism,, and take corresponding countermeasures to have crucial scientific meaning the rule of announcement coal spontaneous ignition.Spontaneous combustion of coal is a kind of complex physico-chemical process, disclose the mechanism of this process, illustrates in the coal transformation rule of various groups in oxidizing process and be the most effectively means.At present, the diffuse reflectance IR appearance is effectively one of means the most directly perceived of radical species and content in the test solid matter.The oxidizing process of current application diffuse reflectance IR research coal mainly contains dual mode:
coal sample placed under the different steady temperatures fully cool off after the oxidation; Infrared spectrum through test cooling coal sample obtains that the group in the coal distributes under each relevant temperature subsequently, and then obtains in the coal group with the approximate Changing Pattern of temperature.The defective of this method is: at first; Lot of research has shown that coal also autoreaction can take place under constant temperature; Be difficult to define coal sample and should under a certain steady temperature, be oxidized to which kind of degree, and reacted cooling coal sample can't reflect under this temperature the truth of group in the coal course of reaction; Secondly, the selected temperature spot of this method is at interval, can't obtain the continuous Changing Pattern of group, owing under each temperature spot, all need carry out abundant oxidation to coal sample, the temperature spot of therefore gathering is intensive more simultaneously, and its test process is consuming time more.
feeds pre-warmed gas to coal sample; Adopt the preheating air-flow that coal body is heated the oxidizing process of simulating coal, and adopt FTIS to test.Because be difficult to gas is carried out accurate temperature programme, this method is only applicable to the constant temperature oxidation analog at present, and the temperature difference that exists between coal sample and the preheating air-flow often causes being difficult to accurate temperature controlling, also fails to realize the real-time testing of reactive group in the coal.To sum up; The proving installation of existing coal course of reaction reactive group and method can not be carried out real-time testing to the group situation of change of this process in simulation oxidation of coal process; Thereby can't obtain the dynamic rule of reactive group in the coal, this has become one of main restricting factor of illustrating coal spontaneous combustion mechanism.
Summary of the invention
Technical matters: the objective of the invention is the problem that exists to prior art, a kind of simple in structure, real-time testing system of can real-time testing analyzing coal course of reaction reactive group continuously is provided.
Technical scheme: the real-time testing system of coal course of reaction reactive group of the present invention mainly is made up of coal sample reaction tank, temperature control equipment, FTIS, water cooling plant, feeder and computing machine; Wherein, The coal sample reaction tank places on the test platform of FTIS; The center of coal sample reaction tank is provided with sample cell; The top of sample cell is provided with the gland bonnet that has glass scanning form, and the outside of coal sample reaction tank is respectively equipped with water inlet, water delivering orifice, air intake opening, exhausr port and temperature control modules interface; Temperature control equipment comprises control panel, is located at display screen, power switch, output switch and temperature control signal wire on the control panel respectively, and temperature control equipment links to each other with the temperature control modules interface of coal sample reaction tank through the temperature control signal wire; Water cooling plant is made up of water pump, inlet pipeline and discharge pipe line, and the water delivering orifice of water pump links to each other with the water inlet of coal sample reaction tank through inlet pipeline, and the wastewater effluent mouth behind discharge pipe line and the coal sample reaction tank of flowing through links to each other; Feeder comprises gas cylinder, is located at pressure maintaining valve and flow stabilizing valve on the gas cylinder, and gas cylinder links to each other through the air intake opening of air inlet pipeline with the coal sample reaction tank, and air inlet pipeline is provided with flow controller; FTIS connects computing machine through data line.
Described coal sample reaction tank is processed by stainless steel; The said sample cell that is located at coal sample reaction tank center is the cylindric of internal diameter 7mm, external diameter 8mm, high 10mm, and its bottom is equipped with one deck stainless steel cloth; The gas flow rate range of control of described gas flow controller is 0.1 mL/min ~ 100 mL/min.
Beneficial effect: the present invention is applicable to the real-time continuous test that group changes in the coal course of reaction, can disclose the genesis mechanism of coal spontaneous combustion.In the test process; Coal sample is put into the coal sample reaction tank; Put on the test platform of FTIS after covering gland bonnet,, set the reaction atmosphere condition of coal sample through feeder through the temperature of reaction condition of temperature control equipment setting coal sample; Start the acquisition system of infrared spectrum; Can carry out the real-time testing analysis to the infrared spectrum of coal course of reaction according to the time interval of setting, and test result is shown on computers in real time, thus the coal course of reaction under the simulation different condition; In this process, adopt FTIS to gather the ir data of reaction coal sample, and then obtain the real-time change rule of coal course of reaction reactive group with the time interval real-time continuous ground of setting.The coal sample consumption of real-time testing system of the present invention is little, and test period is short, and operating process is convenient, fast, and test result can realize the real-time testing of coal course of reaction group situation of change under the differential responses condition accurately and reliably.
Description of drawings
Fig. 1 is a planar structure synoptic diagram of the present invention.
Among the figure: 1-coal sample reaction tank; The 2-temperature control equipment; The 3-Fourier transformation infrared spectrometer; The 4-water cooling plant; The 5-feeder; The 6-computing machine; The 7-sample cell; The 8-gland bonnet; The 9-water inlet; The 10-water delivering orifice; The 11-air intake opening; The 12-exhausr port; 13-temperature control modules interface; The 14-control panel; The 15-display screen; The 16-power switch; 17-exports switch; 18-temperature control signal wire; The 19-water pump; The 20-inlet pipeline; The 21-discharge pipe line; The 22-gas cylinder; The 23-pressure maintaining valve; The 24-flow stabilizing valve; The 25-flow controller; The 26-air inlet pipeline; The 27-gas exhaust piping; The 28-data line; The 29-data output interface.
Embodiment
Below in conjunction with accompanying drawing one embodiment of the present of invention are further described:
Shown in accompanying drawing, the real-time testing system of coal course of reaction reactive group of the present invention is made up of coal sample reaction tank 1, temperature control equipment 2, FTIS 3, water cooling plant 4, feeder 5 and computing machine 6.Be respectively equipped with water inlet 9, water delivering orifice 10, air intake opening 11, exhausr port 12 and temperature control modules interface 13 on the sidewall of coal sample reaction tank 1; Coal sample reaction tank 1 integral body is processed by stainless steel; Have characteristics high temperature resistant, that the heat transmission is fast; Sample cell 7 in the reaction tank is the stainless steel right cylinder of internal diameter 7mm, external diameter 8mm, high 10mm; The top of sample cell 7 is provided with the gland bonnet 8 that has glass scanning form; Lay one deck order number apart from the position of sample cell 7 top 5mm in sample cell 7 inside greater than 200 stainless (steel) wire, the stainless (steel) wire top is used to load coal sample, and lower space is mainly used in gas and gets into the buffering current stabilization behind the sample cell and reach the purpose that gas and coal sample fully contact.Temperature control equipment 2 comprises control panel 14, is located at display screen 15 on the control panel 14, power switch 16, output switch 17 and temperature control signal wire 18 respectively, and temperature control equipment 2 links to each other with the temperature control modules interface 13 of coal sample reaction tank 1 through temperature control signal wire 18; Can set the heating rate of temperature control method (constant temperature or temperature programme), thermostat temperature or the temperature programme of coal sample reaction tank 1 internal reaction environment through control panel 14; And the experiment parameter of setting is passed to the temperature control module of coal sample reaction tank through temperature control signal wire 18, realize control to coal sample reaction environment temperature conditions; The temperature control scope of temperature control equipment 2 is room temperature ~ 1000 ℃, and the temperature-controlled precision during temperature-constant operation is ± 0.01 ℃, is 1 ℃/min ~ 10 ℃/min through the heating rate range of control under the computer program intensification operational mode; The ir data that functional group changes in the FTIS 3 real-time continuous samples of coal pulled courses of reaction, and with the demonstration in real time on the screen of computing machine 6 of these data; Water cooling plant 4 comprises water pump 19, inlet pipeline 20, discharge pipe line 21, and the water delivering orifice of water pump 19 links to each other with the water inlet 9 of coal sample reaction tank 1 through inlet pipeline 20, and the wastewater effluent mouth 10 behind discharge pipe line 21 and the coal sample reaction tank of flowing through links to each other; Inlet and outlet pipe adopts can anti-uniform temperature (≤100 ℃) and the PPR hot-water line of pressure (≤2.0 MPa), and its internal diameter is 4mm, and external diameter is 6mm, is connected respectively to the entery and delivery port 9,10 of coal sample reaction tank 1; Feeder 5 comprises gas cylinder 22, is located at pressure maintaining valve 23 and flow stabilizing valve 24 on the gas cylinder 22, and gas cylinder 22 links to each other with the air intake opening 11 of coal sample reaction tank 1 through air inlet pipeline 26, and air inlet pipeline 26 is provided with flow controller 25; The air intake opening 11 of the coal sample reaction tank 1 that gas stream is connected by air inlet pipeline 26 behind pressure maintaining valve 23, flow stabilizing valve 24, flow controller 25 flows in the sample cell 7 of coal sample reaction tank 1, and the gas flow rate range of control of gas flow controller 25 is 0.1 mL/min ~ 100 mL/min.FTIS 3 is connected computing machine 6 through data output interface 29 with data line 28.
The course of work: start FTIS 3, set its scanning wave number, resolution and number of sample scan according to the needs of test; In sample cell, put into the powdery KBr sample after the grinding, gather the background basic vector; Adopt the agate alms bowl that coal sample to be measured is ground to form in the sample cell 7 of packing into behind the powdery, cover gland bonnet 8, and coal sample reaction tank 1 placed on the test platform of FTIS 3 and debug, fixing; The temperature control modules interface 13 of coal sample reaction tank 1 is linked to each other with the temperature control signal wire 18 of temperature control equipment 2; Water inlet 9, water delivering orifice 10 with coal sample reaction tank 1 links to each other with inlet pipeline 20, the outlet pipeline 21 of water cooling plant 4 respectively; Air intake opening 11, exhausr port 12 with coal sample reaction tank 1 links to each other with air inlet pipeline 26, the gas exhaust piping 27 of feeder 5 respectively, and the impermeability of inspection air-channel system; Set the spectrogram acquisition interval (as 20s/ time) of FTIS 3; Control panel 14 through temperature control equipment 2 is set temperature-rise period (constant temperature or temperature programme) in the coal sample reaction tank 1, simulates different coal sample reaction environment temperature conditions (like 1 ℃/min temperature programme); (commonly used O arranged through choosing the gas cylinder that different types of gas promptly inserts variety classes gas
2, N
2, dry air), and the gas flow controller 25 of adjusting feeder 5, simulate different coal sample reaction atmosphere conditions, as feed the dry air of 0.1 mL/min ~ 100 mL/min.In the test process; When the coal sample temperature is warming up to certain initial testing temperature (as 40 ℃), after a coal sample test process is accomplished, closing temperature control device 2, FTIS 3 and feeder 5; Open water cooling plant 4; Coal sample reaction tank 1 is lowered the temperature, shorten its cool time, thereby be convenient to carrying out fast of next group test process.
Claims (4)
1. the real-time testing system of a coal course of reaction reactive group is characterized in that: it mainly is made up of coal sample reaction tank (1), temperature control equipment (2), FTIS (3), water cooling plant (4), feeder (5) and computing machine (6); Wherein, Coal sample reaction tank (1) places on the test platform of FTIS (3); The center of coal sample reaction tank (1) is provided with sample cell (7); The top of sample cell (7) is provided with the gland bonnet (8) that has glass scanning form, and the outside of coal sample reaction tank (1) is respectively equipped with water inlet (9), water delivering orifice (10), air intake opening (11), exhausr port (12) and temperature control modules interface (13); Temperature control equipment (2) comprises control panel (14), is located at display screen (15) on the control panel (14), power switch (16), output switch (17) and temperature control signal wire (18) respectively, and temperature control equipment (2) passes through temperature control signal wire (18) and links to each other with the temperature control modules interface (13) of coal sample reaction tank (1); Water cooling plant (4) is made up of water pump (19), inlet pipeline (20) and discharge pipe line (21); The water delivering orifice of water pump (19) links to each other with the water inlet (9) of coal sample reaction tank (1) through inlet pipeline (20), and the wastewater effluent mouth (10) behind discharge pipe line (21) and the coal sample reaction tank of flowing through links to each other; Feeder (5) comprises gas cylinder (22), is located at pressure maintaining valve (23) and flow stabilizing valve (24) on the gas cylinder (22); Gas cylinder (22) links to each other with the air intake opening (11) of coal sample reaction tank (1) through air inlet pipeline (26), and air inlet pipeline (26) is provided with flow controller (25); FTIS (3) connects computing machine (6) through data line (28).
2. the real-time testing system of coal course of reaction reactive group according to claim 1 is characterized in that: described coal sample reaction tank (1) is processed by stainless steel.
3. the real-time testing system of coal course of reaction reactive group according to claim 1 and 2; It is characterized in that: the said sample cell (7) that is located at coal sample reaction tank (1) center is cylindric for internal diameter 7mm, external diameter 8mm, high 10mm's, and its bottom is equipped with one deck stainless steel cloth.
4. the real-time testing system of coal course of reaction reactive group according to claim 1 is characterized in that: the gas flow rate range of control of described gas flow controller (25) is 0.1 mL/min ~ 100 mL/min.
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| CN2011102350222A CN102384897A (en) | 2011-08-17 | 2011-08-17 | Real-time test system of active group in coal reaction process |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606758A (en) * | 2016-01-15 | 2016-05-25 | 上海大学 | Method and device for studying mechanism that secondary organic aerosol is produced by photo-oxidation transformation of fuel coal |
| CN112881332A (en) * | 2021-01-14 | 2021-06-01 | 中国矿业大学(北京) | Sample pool for terahertz test in solid heat treatment process |
| CN113049517A (en) * | 2021-02-18 | 2021-06-29 | 天津科技大学 | Temperature programming-infrared spectrum combined device and application thereof in catalyst preparation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202256145U (en) * | 2011-08-17 | 2012-05-30 | 中国矿业大学 | System for testing active groups in real time in coal reaction process |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202256145U (en) * | 2011-08-17 | 2012-05-30 | 中国矿业大学 | System for testing active groups in real time in coal reaction process |
Non-Patent Citations (3)
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| 戚绪尧: "煤中活性基团的氧化及自反应过程", 《中国博士学位论文全文数据库 工程科技I辑》, no. 8, 15 August 2011 (2011-08-15), pages 19 - 40 * |
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| 陆伟等: "煤自燃逐步自活化反应理论", 《中国矿业大学学报》, vol. 36, no. 1, 31 January 2007 (2007-01-31), pages 111 - 115 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105606758A (en) * | 2016-01-15 | 2016-05-25 | 上海大学 | Method and device for studying mechanism that secondary organic aerosol is produced by photo-oxidation transformation of fuel coal |
| CN105606758B (en) * | 2016-01-15 | 2017-08-11 | 上海大学 | The method and apparatus of studying coal-fired photooxidation development generation secondary organic aerosol mechanism |
| CN112881332A (en) * | 2021-01-14 | 2021-06-01 | 中国矿业大学(北京) | Sample pool for terahertz test in solid heat treatment process |
| CN113049517A (en) * | 2021-02-18 | 2021-06-29 | 天津科技大学 | Temperature programming-infrared spectrum combined device and application thereof in catalyst preparation |
| CN113049517B (en) * | 2021-02-18 | 2023-02-03 | 天津科技大学 | Temperature programming-infrared spectrum combined device and application thereof in catalyst preparation |
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Application publication date: 20120321 |