CN205133526U - High temperature entrained flow gasifica tion pyrolysis combined test device and system - Google Patents
High temperature entrained flow gasifica tion pyrolysis combined test device and system Download PDFInfo
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- CN205133526U CN205133526U CN201520943425.6U CN201520943425U CN205133526U CN 205133526 U CN205133526 U CN 205133526U CN 201520943425 U CN201520943425 U CN 201520943425U CN 205133526 U CN205133526 U CN 205133526U
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Abstract
The utility model relates to a coal industry field, concretely relates to high temperature entrained flow gasifica tion pyrolysis combined test device and system, the device include twin zone furnace, screw feeding ware, ash can and temperature control equipment, wherein, the twin zone furnace is including the first section heating furnace and second section heating furnace that link to each other, and first section heating furnace is the resistance wire heating furnace, and second section heating furnace is silicon molybdenum bar heating furnace, runs through being provided with the reaction tube at resistance wire heating furnace and silicon molybdenum bar heating furnace center, the screw feeding ware passes through the charge -in pipeline intercommunication with the entry of reaction tube, ash can and reaction tube export intercommunication, temperature control equipment internally mounted has a temperature system of observing and controling, with the resistance wire heating member with silicon molybdenum bar heating member is connected. This system includes above -mentioned device and gas circuit unit. The device and system have improved the highest heating temperature of gasifier, have prolonged the dwell time of raw materials in the reactor to the realization is to high temperature air current bed coal gasification reaction's abundant simulation.
Description
Technical field
The utility model relates to coal chemical technology, relates generally to gasification or pyrolysis oven field, is specifically related to high-temperature entrained flow gasification/pyrolysis combined test apparatus and system.
Background technology
The development at a high speed of China's sustain economic makes to increase year by year the demand of the energy, but China is the country of " the oil-poor weak breath of rich coal ", therefore strengthens the efficient clean utilization to coal resources, and the coal chemical technology that development has China's characteristic is imperative.Entrained flow bed gasification technology has that gasification temperature is high, throughput is large, the level of resources utilization is high, pollute the advantages such as low, and being applicable to very much the needs of Modern Coal-based Chemical development, is the important development trend of future coal gasification technology.
Large-scale application is in suitability for industrialized production for high-temperature entrained flow Coal Gasification Technology, and air-flow bed coal-gasification test is the indispensable link of coal gasification apparatus design, raw material screening, process parameter optimizing.But coal gasification experiment still has a lot of deficiency at present, and the structure of coal gasification experiment device still haves much room for improvement.More reasonably to pressurize tube type resistance furnace for providing a kind of structure, the patent that application number is CN202630679U provides a kind of pressurization tube type resistance furnace: in burner hearth, removably plug a boiler tube, fuel injector is plugged in the upper end of boiler tube inside, fuel injector outside is provided with water-cooling jacket, and the upper port of this fuel injector is connected with the fuel inlet of pressurization tube type resistance furnace; The lower end of this fuel injector is fixed in a rectification orifice plate; Be inserted with more than the rectification orifice plate of fuel injector part for preheating section, the boiler tube part below fuel injector is working zone; By preheating section, reaction gas is preheated to working temperature, makes working zone homogeneous temperature.Gas atmosphere inlet and reaction gas entrance is provided with in upper furnace; The bottom of pressurization tube type resistance furnace is removably inserted with a sampling gun, and the external diameter of this sampling gun is less than the internal diameter of described boiler tube; The length of described sampling gun is selected according to need; Thermal insulation layer is provided with between burner hearth and pressurization tube type resistance furnace housing.Several heating members are installed in burner hearth; Also piezometric tube is provided with in upper furnace; Housing is steel plate, and thermal insulation layer is refractory fibre.The burner hearth sidewall being positioned at preheating section is provided with some observing and controlling thermopairs, and the burner hearth sidewall being positioned at working zone is provided with some observing and controlling thermopairs and inspection hole, the corresponding temperature control district of each observing and controlling thermopair; Heating member is electrically heated, its hot junction is positioned at burner hearth, cold junction is embedded in thermal insulation layer, heating member installs two heating members along the short transverse compartment of terrain of pressurization tube type resistance furnace body and horizontal symmetrical and be arranged vertically on boiler tube both sides, be temperature control district between the heating member of adjacent both sides, and in being staggered between adjacent two layers heating member, by adjusting the magnitude of voltage at the heating member two ends of each height to control the heating power in this temperature control district; Sampling gun outside is provided with water-cooling jacket.This pressurization tube type resistance furnace can solve heating member sealing, boiler tube not pressure-bearing, add problem such as pressure residence time adjustment etc., technical scheme simple and feasible, implementation cost is low.
Utility model content
The present inventor finds, the research of current laboratory to gasification characteristic adopts thermogravimetry more, but its experiment sample size few (the 10mg order of magnitude), coal particle maintains static with air flow bed particle motion mode difference large, and result of study lacks directiveness; Common laboratory room small-sized vapourizing furnace temperature of reaction is not high and be difficult to abundant Simulated gas fluidized bed high-temperature gasification process; It is huge that test investment is burnt in pilot scale or industry examination, and safety requirements is high, fully can not study the gasification under various working condition.Therefore, need badly a kind of can adopt representative sample size, can hot conditions be carried out under the device tested of (the airflow bed gasification furnace gasification temperature of actual motion is generally higher than 1400 DEG C) solid feed entrained flow gasification.
Namely, the technical problem that the utility model solves is: above-mentioned patent exists following technological deficiency: (1) is owing to adopting Resistant heating, maximum heating temperature low (working temperature <1200 DEG C), inlet amount are unstable and be difficult to segmentation to take gasify solid residue sample etc. in metering, high-temperature gasification process, can not realize the simulation to the reaction of air flow bed high-temperature coal gasification; (2) adopt fuel injector transfer the fuel to enter reaction tubes, although the charging to coal dust can be realized, continuous print feed time can not be ensured; (3) use sampling gun sampling, although the collection of common sample can be met, the separated and collected to gasification lime-ash can not be realized.
The purpose of this utility model is: (1), by adopting Si-Mo rod heating, improves vapourizing furnace maximum heating temperature; Meanwhile, Si-Mo rod process furnace top is also added with a resistance heading furnace, increases gasifying reactor flat-temperature zone, extends the raw material residence time in the reactor, to realize the abundant simulation to high-temperature entrained flow coal gasification reaction; (2) by using the inner feeding screw with scraper plate, the continous-stable charging of raw material has been ensured, and by the power of frequency transformer adjusting screw feeder to realize the control to feeding rate; (3) by connecting the ash can of a built-in filtration unit in reaction tubes lower end, realize gas and gasification being separated of lime-ash, and sampling analysis can be carried out in exit, ash can back to gas; (4) ash can is two sections formula structure, and centre is a ball valve, and realizes the disengaging of hypomere and epimere by a clip, can close ball valve at any time, takes out sample from hypomere.
Specifically, for the deficiencies in the prior art, the utility model provides following technical scheme:
A kind of high-temperature entrained flow gasification/pyrolysis combined test apparatus, is characterized in that, comprise twin zone furnace 1, feeding screw 2, ash can 3 and Temperature-controlled appliance;
Wherein, described twin zone furnace 1 comprises connected first paragraph process furnace and second segment process furnace, described first paragraph process furnace is Resistant heating stove 11, second segment process furnace is Si-Mo rod process furnace 12, run through at Resistant heating stove 11 and Si-Mo rod process furnace 12 center and be provided with reaction tubes 13, described Resistant heating stove 11 comprises furnace wall and is arranged at the first thermal insulation layer between furnace wall and reaction tubes 13, and described first thermal insulation layer inside is provided with Resistant heating body; Described Si-Mo rod process furnace 12 comprises furnace wall and is arranged at the second thermal insulation layer between furnace wall and reaction tubes 13, and described second thermal insulation layer inside is provided with Si-Mo rod heating member 124;
Described feeding screw 2 is communicated with by feed pipe 6 with the entrance of reaction tubes 13;
Described ash can 3 and reaction tubes 13 outlet;
Described Temperature-controlled appliance inside is provided with temperature control system, is connected with described Resistant heating body and described Si-Mo rod heating member.
Preferably, in above-mentioned combined test apparatus, described Si-Mo rod process furnace 12 comprises furnace wall 121, is arranged at the burner hearth 122 at center and is arranged at the second thermal insulation layer 123 between furnace wall and burner hearth, described reaction tubes 13 runs through burner hearth 122, and it is inner that described Si-Mo rod heating member 124 is arranged at burner hearth 122 around reaction tubes 13.
Preferably, in above-mentioned combined test apparatus, the length of described reaction tubes 13 in Si-Mo rod process furnace 12 and the length ratio of reaction tubes 13 in Resistant heating stove 11 are (4-6): 1.
Preferably, in above-mentioned combined test apparatus, described feeding screw 2 comprises hopper 21, feeding cylinder 22, first motor 23 and the second motor 24, described feeding cylinder 22 inside is provided with the rotation axis driven by the first motor 23 and the screw-blade 221 being driven by rotation axis, arrange around rotation axis along axis direction, one end of feeding cylinder 22 sidewall is communicated with hopper 21, the other end is provided with the discharge nozzle 222 of through barrel, and described discharge nozzle 222 is communicated with described feed pipe 6.
Preferably, in above-mentioned combined test apparatus, be provided with the scraper plate 211 rotated around axle center bottom described hopper 21, described scraper plate 211 is driven by the second motor 24.
Preferably, in above-mentioned combined test apparatus, the first motor 23 of described feeding screw 2 is connected with frequency transformer.
Preferably, in above-mentioned combined test apparatus, described ash can 3 is two-part ash can, comprises detachable epimere ash can 31 and hypomere ash can 32, and the outlet of described epimere ash can 31 and described reaction tubes 13, epimere ash can 31 sidewall is connected with outlet pipe 9.
Preferably, in above-mentioned combined test apparatus, described epimere ash can 31 inside is provided with the filtration unit 33 be communicated with outlet pipe 9.
Preferably, in above-mentioned combined test apparatus, described reaction tubes 13 is provided with the first thermopair in the pipe of 11 sections, Resistant heating stove, described reaction tubes 13 is provided with the second thermopair in the pipe of 12 sections, Si-Mo rod process furnace, and described reaction tubes 13 is outside equipped with three thermocouple at the pipe of 12 sections, Si-Mo rod process furnace.
Preferably, above-mentioned combined test apparatus, wherein, described Temperature-controlled appliance comprises the first temperature-controlled cabinet 41 and the second temperature-controlled cabinet 42;
Described first temperature-controlled cabinet 41 inside is provided with wire temperature TT&C system, is connected with described Resistant heating body, the first thermopair and the second thermopair;
Described second temperature-controlled cabinet 42 inside is provided with Si-Mo rod temperature control system and transformer, and described Si-Mo rod temperature control system is connected with Si-Mo rod heating member 124 and three thermocouple.
The utility model also provides a kind of high-temperature entrained flow gasification/pyrolysis comprehensive test system, it is characterized in that, comprises above-mentioned high-temperature entrained flow gasification/pyrolysis combined test apparatus and gas circuit unit, and described gas circuit unit is communicated with feed pipe 6 by intake ducting 7;
Described gas circuit unit comprises the gas piping of deionized water pipeline and more than one or two be arranged in parallel; Described deionized water pipeline is connected with water receiver 81 and high-pressure pump 82 in turn; Described gas piping is connected with gas cylinder, under meter and valve in turn.
Preferably, in above-mentioned comprehensive test system, described intake ducting 7 is provided with electric heating carburetor 5.
Wherein, described flow counts the conventional under meter in this area, as molecular flow gauge or mass flowmeter etc.
Wherein, according to actual needs, the furnace wall of described Resistant heating stove 11 and the furnace wall of Si-Mo rod process furnace 12 can be designed for integral type, namely share a furnace wall, also can separately design.
The beneficial effects of the utility model are: in (1) industrial gasification device, the temperature of entrained flow gasification is generally higher than 1400 DEG C, but the mode of now conventional small evaporator device many employings conventional resistive silk heating, be difficult to reach so high temperature, well can not simulate gasification, this device uses the most high energy of Si-Mo rod high-temperature heater to provide the gasification condition of 1550 DEG C, meets test requirements document.
(2) in this testing apparatus, can by mass flowmeter to O
2, CO
2, N
2etc. carrying out accurate flow control, and be designed with different bypath systems to switch gas flexibly; Regulated the de-ionized water flow rate entering electric heating carburetor by pressure liquid pump, and then control the generating capacity of water vapour; By to O
2, CO
2, H
2o (g), N
2switch and discharge matching Deng gas, realize the gasification operating mode (O of different ratios
2, CO
2, H
2o (g)) and pyrolysis operating mode (N
2inert gas environment), namely easily testing apparatus is switched between vapourizing furnace, pyrolysis oven; Comprehensive regulation vaporized chemical under gasification operating mode, studies the impact of different vaporized chemical on gasification easily.
(3) in this testing apparatus, can by mass flowmeter to N
2, CO
2carry out accurate flow control, and can be switched flexibly by the valve in air-channel system and bypath system, not only can meet N
2do gasification carrier gas, also can switch to CO
2do gasification carrier gas, the impact of different carrier gas on gasification can be studied easily.
(4) in this testing apparatus, alundum tube reactor is longer, under the effect of twin zone furnace, can ensure long high-temperature zone, gasified reverse should be able to fully be completed.
(5) connect the ash can with filtration unit under alundum tube reactor, while realizing gas and ash separation, residue after gasifying is retained down, and realize collecting in ash can; After gas leaves ash can by filtration unit, collection analysis is to be measured.
(6) ash can is two-part structure, and upper pars infrasegmentalis installs a ball valve, and hypomere is dismountable ash can of a clamp connection; By opening and closing ball valve, time of ash can be entered by Quality control, coordinate and retract clip, can realize sample continuous, sample stage by stage.
(7) in this testing apparatus, gasification/Study on Pyrolysis scope can be expanded by the kind (as biomass, refinery coke, resinous shale etc.) changing feeding screw Raw.
Accompanying drawing explanation
Fig. 1 is the structure iron of high-temperature entrained flow gasification described in embodiment one/pyrolysis combined test apparatus;
Fig. 2 is the sectional view of Si-Mo rod process furnace described in high-temperature entrained flow gasification described in embodiment one/pyrolysis combined test apparatus;
Fig. 3 is the structure iron of feeding screw described in high-temperature entrained flow gasification described in embodiment one/pyrolysis combined test apparatus;
Fig. 4 is the structure iron of ash can described in high-temperature entrained flow gasification described in embodiment one/pyrolysis combined test apparatus;
Fig. 5 is the structure iron of high-temperature entrained flow gasification described in embodiment two/pyrolysis comprehensive test system.
Wherein, 1 is twin zone furnace, 2 is feeding screw, 3 is ash can, 41 is the first temperature-controlled cabinet, 42 is the second temperature-controlled cabinet, 5 is electric heating carburetor, 6 is feed pipe, 7 is intake ducting, 11 is Resistant heating stove, 12 is Si-Mo rod process furnace, 13 is reaction tubes, 121 is the furnace wall of Si-Mo rod process furnace, 122 is burner hearth, 123 is the second thermal insulation layer, 124 is Si-Mo rod heating member, 21 is hopper, 211 is scraper plate, 22 is feeding cylinder, 221 is screw-blade, 222 is discharge nozzle, 23 is the first motor, 24 is the second motor, 31 is epimere ash can, 32 is hypomere ash can, 33 is filtration unit, 34 is ball valve, 35 is clip, 9 is outlet pipe, 81 is water receiver, 82 is high-pressure pump, S1 is the first gas piping, S2 is the second gas piping, S3 is the 3rd gas piping, S4 is deionized water pipeline.
Embodiment
In view of laboratory room small-sized vapourizing furnace temperature of reaction common is at present high and be difficult to abundant Simulated gas fluidized bed high-temperature gasification process, it is huge that test investment is burnt in pilot scale or industry examination, safety requirements is high, fully can not study the gasification under various working condition, the utility model provides a kind of high-temperature entrained flow gasification/pyrolysis combined test apparatus and system, gasification temperature can be increased to 1550 DEG C, and by realizing changing feeding rate in real time to the adjustment of feeding screw frequency transformer, and ensure the charging of continous-stable.
In a preferred embodiment, high-temperature entrained flow gasification described in the utility model/pyrolysis combined test apparatus comprises twin zone furnace, feeding screw, ash can and Temperature-controlled appliance, described twin zone furnace comprises Resistant heating stove and Si-Mo rod process furnace, inside is respectively arranged with Resistant heating body and Si-Mo rod heating member, and is connected with the temperature control system in Temperature-controlled appliance; Described feeding screw is connected with frequency transformer, controls feeding rate; Described ash can inside is provided with filtration unit, realizes gas and gasification being separated of lime-ash, and can carry out sampling analysis in ash can exit to gas.
In a preferred embodiment, high-temperature entrained flow gasification described in the utility model/pyrolysis comprehensive test system comprises high-temperature entrained flow gasification/pyrolysis combined test apparatus and the gas circuit unit be communicated with it, described gas circuit unit comprises the deionized water pipeline and gas piping that are arranged in parallel, and described gas piping comprises carbon dioxide pipeline, nitrogen gas pipeline and oxygen gas pipeline.
Below in conjunction with accompanying drawing and each embodiment, high-temperature entrained flow gasification described in the utility model/pyrolysis combined test apparatus and system and Advantageous Effects thereof are described in detail.
Embodiment one
One of the present utility model preferred embodiment in, the structure of described high-temperature entrained flow gasification/pyrolysis combined test apparatus as shown in Figure 1, comprises with lower component:
Twin zone furnace 1: described twin zone furnace 1 comprises connected first paragraph process furnace and second segment process furnace, described first paragraph process furnace is Resistant heating stove 11, described second segment process furnace is Si-Mo rod process furnace 12, runs through being provided with reaction tubes 13 at Resistant heating stove 11 and Si-Mo rod process furnace 12 center;
Described Resistant heating stove 11 comprises furnace wall and is arranged at the first thermal insulation layer between furnace wall and reaction tubes 13, and described first thermal insulation layer inside is provided with Resistant heating body;
The sectional view of described Si-Mo rod process furnace 12 as shown in Figure 2, comprise furnace wall 121, be arranged at the burner hearth 122 at center and be arranged at the second thermal insulation layer 123 between furnace wall and burner hearth, described reaction tubes 13 runs through burner hearth, and described burner hearth inner reaction pipe 13 surrounding is evenly provided with four Si-Mo rod heating members 124;
Wherein, described reaction tubes 13 is corundum reaction tubes (purity 99.9%, heat-resisting 1700 DEG C), and internal diameter is 60mm, long 1.8m, and thickness of pipe is 4mm.The length of corundum reaction tubes in Resistant heating stove 11 is 30cm, and the length in Si-Mo rod process furnace 12 is 140cm; Described reaction tubes 13 is provided with the first platinum rhodium thermocouple in the pipe of 11 sections, Resistant heating stove, described reaction tubes 13 is provided with the second platinum rhodium thermocouple in the pipe of Si-Mo rod heating member 12 sections, and described reaction tubes 13 is outside equipped with the 3rd platinum rhodium thermocouple at the pipe of Si-Mo rod heating member 12 sections; Described reaction tubes two ends high-temp glue and corundum Flange joint.
Wherein, described Si-Mo rod is U-shaped Si-Mo rod, and producer is Zibo Ju Xin company limited; The quantity of Si-Mo rod described in the utility model can regulate as required, is preferably even number, as 4 or 6.
Feeding screw 2: structure as shown in Figure 3, described feeding screw 2 comprises hopper 21, feeding cylinder 22, first motor 23 and the second motor 24, the scraper plate 211 rotated around axle center is provided with bottom described hopper 21, driven by the second motor 24, make material uniformly distributing, ensure the stable charging of raw material, be provided with rotation axis in described feeding cylinder 22 along axle center and driven by rotation axis, around the screw-blade 221 that rotation axis is arranged, one end of feeding cylinder 22 sidewall is communicated with hopper 21, the other end is provided with the discharge nozzle 222 of through barrel, described rotation axis is driven by the first motor 23, by the rotation of rotation axis and screw-blade 221, material is transported to discharge nozzle 222 from hopper.
Wherein, the first motor 23 of described feeding screw 2 is connected with frequency transformer, is used for the power of adjusting screw feeder to realize control to feeding rate; The discharge nozzle 222 of described feeding screw 2 is communicated with the reaction tubes 13 of body of heater by feed pipe 6.
Ash can 3: structure as shown in Figure 4, described ash can 3 is two-part ash can: the epimere ash can 31 connected by clip 35 and hypomere ash can 32, epimere ash can 31 is communicated with reaction tubes 13, sidewall is provided with outlet pipe 9, inside is provided with the filtration unit 33 be communicated with outlet pipe 9, through filteration, by ash collection in hypomere ash can 32, gas is device after filtration, discharged by outlet pipe 9, described epimere ash can 31 is provided with ball valve 34 between outlet pipe 9 and clip 35, close ball valve, unload lower catch hoop 35 and just can take out lime-ash easily from hypomere ash can 32, realize not blowing out real time sample when carrying out continuously testing under multi-state.
Temperature-controlled appliance: inside is provided with temperature control system, is connected with Resistant heating body and Si-Mo rod heating member, to control the temperature of reaction zone in reaction tubes.
In another preferred embodiment, described Temperature-controlled appliance comprises the first temperature-controlled cabinet 41 and the second temperature-controlled cabinet 42, in described first temperature-controlled cabinet 41, wire temperature TT&C system is installed, be connected with described Resistant heating body, the first platinum rhodium thermocouple and the second platinum rhodium thermocouple, and then control the temperature of reaction tubes 13 in Resistant heating stove 11 sections of reaction zones.In described second temperature-controlled cabinet 42, Si-Mo rod temperature control system and transformer are installed, extraneous power supply is that Si-Mo rod heating member is powered by transformer, Si-Mo rod temperature control system is connected with Si-Mo rod heating member and the 3rd platinum rhodium thermocouple, and then controls the temperature of reaction tubes 13 reaction zone and Si-Mo rod heating member 124 in Si-Mo rod process furnace 12.
In addition, described first platinum rhodium thermocouple and the position of the second platinum rhodium thermocouple in reaction tubes can regulate as required, one preferred embodiment in, two platinum rhodium thermocouples can be arranged at arbitrary place of in the middle of reaction tubes 1/3rd sections, to detect the temperature of flat-temperature zone more accurately.
The operating process of high-temperature entrained flow gasification described in the present embodiment/pyrolysis combined test apparatus is as follows:
Before carrying out gasification reaction, first inspection units resistance to air loss; Then twin zone furnace 1 is heated up in advance, according to different test objectives and working condition requirement, controlling reaction tubes 13 in the temperature of the reaction zone of 11 sections, Resistant heating stove by regulating Temperature-controlled appliance is between 800-1000 DEG C, controls reaction tubes 13 and reaches between 1200-1550 DEG C in the temperature of the reaction zone of 12 sections, Si-Mo rod process furnace.The fuel inputted by feeding screw 2 and from intake ducting 7 input carrier gas acting in conjunction make coal dust from top charging, realize changing feeding rate in real time by frequency transformer, ensure the charging of continous-stable, reacted lime-ash is collected in the hypomere ash can 32 of corundum retort, and gas leaves ash can after then removing flying dust by the strainer in ash can.
In addition, it should be noted that, in the utility model, the length of described reaction tubes 13 in Si-Mo rod process furnace 12 can regulate as required with the length ratio scope in Resistant heating stove 11, is preferably (4-6): 1.
Embodiment two
One of the present utility model preferred embodiment in, the structure iron of described high-temperature entrained flow gasification/pyrolysis comprehensive test system as shown in Figure 5, comprise high-temperature entrained flow gasification/pyrolysis combined test apparatus and gas circuit unit, described high-temperature entrained flow gasification/pyrolysis installation is identical with embodiment one, and described gas circuit unit comprises the first gas piping, the second gas piping, the 3rd gas piping and the deionized water pipeline that are arranged in parallel.
First gas piping S
1: be connected with dioxide bottle, under meter and valve in turn;
Second gas piping S
2: be connected with oxygen gas cylinder, under meter and valve in turn;
3rd gas piping S
3: be connected with nitrogen gas cylinder, under meter and valve in turn;
Deionized water pipeline S
4: be connected with water receiver 81 and high-pressure pump 82 in turn.
After described first gas piping, the second gas piping, the 3rd gas piping and deionized water tube outlet converge, be communicated with feed pipe 6 by intake ducting 7, described intake ducting 7 is provided with electric heating carburetor 5.
In addition, according to actual needs, the pipeline quantity of gas circuit unit can adjust: such as, only can retain a gas piping, or only retain two gas pipings.
The operating process of high-temperature entrained flow gasification/pyrolysis system described in the utility model is as follows:
Each pipeline in first connected system, checks resistance to air loss; Again twin zone furnace is heated up in advance; Then make coal dust from upper feeding, by under meter to N by the acting in conjunction of feeding screw and carrier gas
2, O
2, CO
2flow control, by high-pressure pump controlling deionized water as far as possible, by electric heating carburetor preheating carried out to gas and heat to produce water vapour to deionized water, and mixing wherein.Control the temperature in reaction tubes in twin zone furnace, after raw material reaction, the ash can of lime-ash in induction tube lower end is collected.System described in the utility model can by regulating N
2, O
2, CO
2valve and under meter realize to carrier gas and vaporized chemical flexible modulation, can by controlling high-pressure pump switch and the flexible of uninterrupted realization to water vapour add-on, different gasification reaction temperature from room temperature to 1550 DEG C can be reached by regulating automatic temperature control system realization response district, by realizing changing feeding rate in real time to the adjustment of feeding screw frequency transformer, and the charging of continous-stable can be ensured.
Embodiment three
High-temperature entrained flow gasification described in the utility model/pyrolysis combined test apparatus and the application of system in gasification field.
The application industrially of modern Coal Gasification Technology is more and more wider, scale increases day by day, for improving gasification efficiency, reducing energy consumption and pollution, strengthen the common recognition having become educational circles for the research of gasification, reaction mechanism and processing parameter, if but on industrialized unit, carry out corresponding exploration and test, slightly improperly will cause huge financial loss and great security incident, because of but unpractical.
In high-temperature entrained flow gasification/pyrolysis combined test apparatus, the Resistant heating stove 11 outside reaction tubes is connected with thermopair with Si-Mo rod process furnace 12, and temperature signal is passed to automatic temperature control system by thermopair, and Controlling System can notify the temperature of reaction tubes inside.N needed for gasification reaction
2, O
2control flow by mass flowmeter, before entering reaction tubes, realize preheating and mixing.Deionized water controls flow and send into electric heating carburetor by pressure liquid pump, then after changing into water vapour with gas and vapor permeation evenly and enter testing apparatus.
In this testing apparatus, according to test requirements document and design, by regulating temperature control system, the gasification reaction temperature of the highest 1550 DEG C can be reached: by adjustments of gas pipeline and high-pressure pump, vaporized chemical (O can be realized flexibly
2/ H
2o (g) or gas mixture) and carrier gas (N
2) etc. the real-time adjustment of processing parameter; By the change of feeding screw frequency, can inlet amount be regulated, comprehensively to allocate the ratio of raw material and vaporized chemical, comprehensive above function, device extensively can be carried out realization and explore gasification and reaction mechanism, the research work that the science such as Optimizing Process Parameters combine with practice.
It is raw material that the present embodiment chooses Lingwu bituminous coal (producer: plum blossom well colliery), and with high-temperature entrained flow gasification/pyrolysis system described in embodiment two, carry out gasification experiment, concrete process of the test is as follows:
(1) Lingwu bituminous coal is broken, screening, cross 200 mesh sieves (GB6003.1-1997 standard square hole screen, Taylor system), enter with the input speed of 1.38g/min in the entrained flow gasification/pyrolysis combined test apparatus being warming up to preset temperature in advance, wherein, the preset temperature of Resistant heating stove 11 is 800 DEG C, and the preset temperature of Si-Mo rod process furnace 12 is as shown in table 1.
(2) open the first gas piping, the second gas piping, the 3rd gas piping and deionization pipeline, regulate the under meter of each pipeline, make N
2flow is 0.21L/min, O
2flow is 0.4L/min, H
2o flow is 0.11ml/min, at carrier gas (N
2) under effect, by vaporized chemical (O
2and H
2o) and flyash send in reaction tubes, react.
(3) change the gasification temperature of reaction zone in Si-Mo rod process furnace 12, the gaseous product collected under different gasification temperature condition is sent in gas chromatograph, and analytical gas forms, and result is as shown in table 1:
The composition of working off one's feeling vent one's spleen of table 1 Lingwu bituminous coal gasification reaction.
As can be seen from Table 1, along with the rising of gasification temperature, in gaseous product, the composition of geseous fuel raises gradually, illustrates that pilot system described in the present embodiment successfully can realize coal gasification reaction under different hot conditions, for exploring gasification and reaction mechanism provides new approach.
Embodiment four
High-temperature entrained flow gasification described in the utility model/pyrolysis combined test apparatus and the application of system in coal gasification reaction performance evaluation field.
Accurate evaluation coal gasification reactivity worth, can provide strong reference for location coal application direction, screening gasification raw materials for production etc., save enterprise's production cost, and then produce huge economic and social profit.At present to the reactive evaluation of gasification of coal, many employing thermogravimetrys and tube oven method, the production process that all gasifies with reality in temperature of reaction, reactive mode and interpretation of result etc. is totally different, and the performance index of acquisition leave a question open.
Be placed in the hopper of self-conveyor feed by coal (or burnt) powder of needs assessment, coupling device parts also check resistance to air loss.Close CO
2, O
2with pressure liquid pump, keep N
2flow, the heating final temperature of setting process furnace, starts the temperature-rise period subscribed.Be raised to preset temperature and stable after, start to pass into CO
2, and progressively close N
2.Treat CO
2after flow speed stability, start to pass into coal (or burnt), collect tail gas and detect wherein gas concentration, according to CO and CO
2concentration ratio evaluate gasification reaction performance and the potentiality of institute coal separation (or burnt).
The present embodiment selects Shengli Brown (producer: Xilin Hot, Inner Mongolia Shengli Coalfield) to be raw material, and with high-temperature entrained flow gasification/pyrolysis system described in embodiment two, carry out coal gasification reaction performance evaluation, concrete process of the test is as follows:
(1) by Shengli Brown at N
2under 900 DEG C of conditions, pyrolysis char is made under protective atmosphere; fragmentation is carried out to it; screening; to enter in the entrained flow gasification/pyrolysis comprehensive experimental device rising to preset temperature in advance wherein with the input speed of 1.26g/min; the preset temperature of Resistant heating stove 11 is 800 DEG C, and the preset temperature of Si-Mo rod process furnace 12 is as shown in table 2.
(2) start to pass into CO
2, control CO
2flow is 0.6L/min.The gaseous product collected under condition of different temperatures sends into gas-chromatography, and analytical gas forms.
The composition of working off one's feeling vent one's spleen of table 2 Shengli Brown char Gasification reaction.
As can be seen from Table 2, along with the rising of gasification temperature, in gaseous product, CO concentration increases, and the concentration of CO2 reduces, and difference obviously, illustrates that pilot system described in the present embodiment successfully can realize the mensuration of coal gasification reactivity worth.
Embodiment five
High-temperature entrained flow gasification described in the utility model/pyrolysis combined test apparatus and the application of system in pyrolysis of coal reaction field.
Pyrolytic reaction is starting stage and the initial action of gasification, pyrolysis simultaneously is also important process and the approach of coal processing and utilization, but under conventional ramp produces rate conditions is confined to more on the research of pyrolytic reaction different temperature rise rate, pyrolysis temperature, soaking time in the impact of pyrolysis product, under being difficult to study the condition of being rapidly heated, multi-state is on the impact of pyrolysis of coal reaction process, more be difficult to obtain semicoke sample under extremely fast Elevated Temperature Conditions, thus effectively can not study gasification reaction initial action process.
Pilot system described in embodiment two is used for pyrolysis of coal reaction, detailed process is as follows:
Take test coal sample, put in feeding screw, connect testing apparatus all parts such as comprising admission passage, reaction tubes, ash can and the outlet pipe that is communicated with strainer and check resistance to air loss; Nitrogen mass flow meter on setting device, and open valve and start to pass into N
2; In temperature automatic system, set test temperature according to test requirements document, then start to heat up; Treat temperature be raised to preset temp and stable after, according to the frequency of setting, open feeding screw and start into coal; Burnt sample after pyrolytic reaction can be collected in ash can, and question response terminates, and temperature just can be taken out after reducing to normal temperature; Note must keeping N in reactor in temperature-fall period
2protective atmosphere.
Embodiment six
High-temperature entrained flow gasification described in the utility model/pyrolysis combined test apparatus and the application of system in biomass gasification reaction field.
Day by day exhausted along with fossil energy, the importance of biomass energy obtains increasing concern, utilizes gasification technology by Wood Adhesives from Biomass for synthetic gas becomes the focus of research.But biomass are because fixed carbon content is low, complicated component is changeable, cause effective gas composition not high, this becomes problem demanding prompt solution.And entrained flow bed gasification technology has gasification intensity greatly, the feature that capacity usage ratio is high is the development priority of following gasification technology, and both combinations maybe can open up new field and direction for energy utilization.
Si-Mo rod and electrically heated two-stage furnace can realize the different gasification final temperatures from room temperature to 1550 DEG C easily, utilize mass flowmeter to regulate N
2, O
2, CO
2aeration ratio, enter the feeding screw feed opening biomass of carrying secretly after drying fragmentation after mixing with water vapour preheating in electric heating carburetor and enter reactor generating gasification and react.
In sum, high-temperature entrained flow gasification described in the utility model/pyrolysis combined test apparatus and system can ensure that the highest gasification temperature reaches 1550 DEG C; By under meter control N
2, O
2, CO
2flow, controlling the inlet of water vapour by high-pressure pump, the ratio of vaporized chemical being regulated easily, for studying the impact of different vaporized chemical on gasification; The scraper plate arranged in feeding screw can ensure the input speed of continous-stable; The two-piece design of ash can dismantle hypomere ash can easily, realizes continuous real time sample.
Claims (12)
1. high-temperature entrained flow gasification/pyrolysis combined test apparatus, is characterized in that, comprises twin zone furnace (1), feeding screw (2), ash can (3) and Temperature-controlled appliance;
Wherein, described twin zone furnace (1) comprises connected first paragraph process furnace and second segment process furnace, described first paragraph process furnace is Resistant heating stove (11), second segment process furnace is Si-Mo rod process furnace (12), run through at Resistant heating stove (11) and Si-Mo rod process furnace (12) center and be provided with reaction tubes (13), described Resistant heating stove (11) comprises furnace wall and is arranged at the first thermal insulation layer between furnace wall and reaction tubes (13), and described first thermal insulation layer inside is provided with Resistant heating body; Described Si-Mo rod process furnace (12) comprises furnace wall and is arranged at the second thermal insulation layer between furnace wall and reaction tubes (13), and described second thermal insulation layer inside is provided with Si-Mo rod heating member (124);
Described feeding screw (2) is communicated with by feed pipe (6) with the entrance of reaction tubes (13);
Described ash can (3) and reaction tubes (13) outlet;
Described Temperature-controlled appliance inside is provided with temperature control system, is connected with described Resistant heating body and described Si-Mo rod heating member.
2. combined test apparatus according to claim 1, wherein, described Si-Mo rod process furnace (12) comprises furnace wall (121), is arranged at the burner hearth (122) at center and is arranged at the second thermal insulation layer (123) between furnace wall and burner hearth, described reaction tubes (13) runs through burner hearth (122), and it is inner that described Si-Mo rod heating member (124) is arranged at burner hearth (122) around reaction tubes (13).
3. combined test apparatus according to claim 1, wherein, the length of described reaction tubes (13) in Si-Mo rod process furnace (12) and the length ratio of reaction tubes (13) in Resistant heating stove (11) are (4-6): 1.
4. combined test apparatus according to claim 1, wherein, described feeding screw (2) comprises hopper (21), feeding cylinder (22), first motor (23) and the second motor (24), described feeding cylinder (22) is inner to be provided with along axis direction the rotation axis that driven by the first motor (23) and to be driven by rotation axis, around the screw-blade (221) that rotation axis is arranged, one end of feeding cylinder (22) sidewall is communicated with hopper (21), the other end is provided with the discharge nozzle (222) of through barrel, described discharge nozzle (222) is communicated with described feed pipe (6).
5. combined test apparatus according to claim 4, wherein, described hopper (21) bottom is provided with the scraper plate (211) rotated around axle center, and described scraper plate (211) is driven by the second motor (24).
6. combined test apparatus according to claim 4, wherein, first motor (23) of described feeding screw (2) is connected with frequency transformer.
7. combined test apparatus according to claim 1, wherein, described ash can (3) is two-part ash can, comprise detachable epimere ash can (31) and hypomere ash can (32), the outlet of described epimere ash can (31) and described reaction tubes (13), epimere ash can (31) sidewall is connected with outlet pipe (9).
8. combined test apparatus according to claim 7, wherein, described epimere ash can (31) inside is provided with the filtration unit (33) be communicated with outlet pipe (9).
9. combined test apparatus according to claim 2, wherein, described reaction tubes (13) is provided with the first thermopair in the pipe of Resistant heating stove (11) section, described reaction tubes (13) is provided with the second thermopair in the pipe of Si-Mo rod process furnace (12) section, and described reaction tubes (13) is outside equipped with three thermocouple at the pipe of Si-Mo rod process furnace (12) section.
10. combined test apparatus according to claim 9, wherein, described Temperature-controlled appliance comprises the first temperature-controlled cabinet (41) and the second temperature-controlled cabinet (42);
Described first temperature-controlled cabinet (41) inside is provided with wire temperature TT&C system, is connected with described Resistant heating body, the first thermopair and the second thermopair;
Described second temperature-controlled cabinet (42) inside is provided with Si-Mo rod temperature control system and transformer, and described Si-Mo rod temperature control system is connected with Si-Mo rod heating member (124) and three thermocouple.
11. 1 kinds of high-temperature entrained flow gasification/pyrolysis comprehensive test systems, it is characterized in that, comprise the high-temperature entrained flow gasification/pyrolysis combined test apparatus described in any one of claim 1-10 and gas circuit unit, described gas circuit unit is communicated with feed pipe (6) by intake ducting (7);
Described gas circuit unit comprises the gas piping of deionized water pipeline and more than one or two be arranged in parallel; Described deionized water pipeline is connected with water receiver (81) and high-pressure pump (82) in turn; Described gas piping is connected with gas cylinder, under meter and valve in turn.
12. comprehensive test systems according to claim 11, wherein, described intake ducting (7) are provided with electric heating carburetor (5).
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105255520A (en) * | 2015-11-24 | 2016-01-20 | 中国矿业大学(北京) | Device and system for gasification/thermolysis combined test of high-temperature entrained-flow bed |
| US20190136767A1 (en) * | 2015-06-05 | 2019-05-09 | Rolls-Royce North America, Inc. | System and method for coking detection |
| CN111258345A (en) * | 2020-02-25 | 2020-06-09 | 北京首钢朗泽新能源科技有限公司 | Gas concentration stabilizing device and control method thereof |
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2015
- 2015-11-24 CN CN201520943425.6U patent/CN205133526U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190136767A1 (en) * | 2015-06-05 | 2019-05-09 | Rolls-Royce North America, Inc. | System and method for coking detection |
| US10982598B2 (en) * | 2015-06-05 | 2021-04-20 | Rolls-Royce North American Technologies, Inc. | System and method for coking detection |
| CN105255520A (en) * | 2015-11-24 | 2016-01-20 | 中国矿业大学(北京) | Device and system for gasification/thermolysis combined test of high-temperature entrained-flow bed |
| CN111258345A (en) * | 2020-02-25 | 2020-06-09 | 北京首钢朗泽新能源科技有限公司 | Gas concentration stabilizing device and control method thereof |
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