CN208350570U - A kind of granule density measuring device for high temperature oil-containing dusty gas - Google Patents
A kind of granule density measuring device for high temperature oil-containing dusty gas Download PDFInfo
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- CN208350570U CN208350570U CN201820851857.8U CN201820851857U CN208350570U CN 208350570 U CN208350570 U CN 208350570U CN 201820851857 U CN201820851857 U CN 201820851857U CN 208350570 U CN208350570 U CN 208350570U
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- 239000008187 granular material Substances 0.000 title claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 86
- 238000010438 heat treatment Methods 0.000 claims abstract description 41
- 239000000428 dust Substances 0.000 claims abstract description 37
- 238000010791 quenching Methods 0.000 claims abstract description 34
- 230000000171 quenching effect Effects 0.000 claims abstract description 34
- 238000009413 insulation Methods 0.000 claims abstract description 33
- 239000002245 particle Substances 0.000 claims abstract description 31
- 238000009833 condensation Methods 0.000 claims description 35
- 230000005494 condensation Effects 0.000 claims description 35
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 30
- 230000003068 static effect Effects 0.000 claims description 21
- 238000009530 blood pressure measurement Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 238000005259 measurement Methods 0.000 abstract description 23
- 239000007789 gas Substances 0.000 description 85
- 239000011269 tar Substances 0.000 description 36
- 238000005516 engineering process Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 10
- 239000003245 coal Substances 0.000 description 9
- 239000003034 coal gas Substances 0.000 description 7
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 238000005485 electric heating Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000011490 mineral wool Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 238000004781 supercooling Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000002631 hypothermal effect Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000000699 topical effect Effects 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 239000011280 coal tar Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003189 isokinetic effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to a kind of granule density measuring devices for high temperature oil-containing dusty gas, including dust particles sampling unit, fractional condensaion unit, low temperature quenching unit and the aspiration pump being sequentially connected to by pipeline；Pipeline between the low temperature quenching unit and aspiration pump is equipped with flowmeter；The dust particles sampling unit includes the first heating and thermal insulation unit on the outside of sampling head, sampling pipe and sampling pipe；It is equipped with quartzy filter cylinder in the sampling pipe and the accommodating chamber of quartzy filter cylinder is installed.The device can carry out sampling and accurate measurement dust concentration to the dust particles in high temperature oil-containing dusty gas, be furthermore possible to that tar is avoided to condense on flowmeter and aspiration pump.
Description
Technical field
The utility model relates to particle sampling and apparatus for measuring concentration in gas, and in particular to one kind contains for high temperature oil-containing
The granule density measuring device of dust and gas body.
Background technique
Coal poly-generation technology based on coal pyrolysis is a kind of important technical of coal high-efficiency clean utilization,
Pyrolytic gasification is carried out to the coal rich in volatile matter under high temperature environment, can get coal gas, tar and semicoke, coal gas is through dividing
It can get high-quality gaseous fuel from purifying, tar can get the chemical products of high-quality by further deep processing, and semicoke can
It is directly used in combustion power generation, to realize coal staged conversion clean utilization, is had broad application prospects.
Containing particulate matters such as a large amount of flying dust, coals in the raw gas that coal is generated through pyrolytic gasification, currently to these
The technical way that is removed of grain object be high temperature oil-containing dust-laden coal gas is sent directly into chilling tower it is cooling, by tar and
Dust removes together.However, this particulate matter removing method will lead to, dustiness in tar is excessively high, is unfavorable for the subsequent benefit of tar
With, and then limit the heavy industrialization application of coal poly-generation technology.
High temperature oil-containing dusty gas dedusting technology is a kind of technology removed under high temperature environment to particulate matter, including
High-temp. vortex isolation technics, Bed Filtration technology and high temperature electrostatic dedusting technology etc..High-temp. vortex isolation technics is to utilize
Generated centrifugal force when dusty gas progress high speed rotation, the cleaner that solid is separated from gas, but it is high
Warm Cyclone Separation Technology is invalid to the particle of small grain size, therefore can only generally be used as pre- cleaner.High temperature electrostatic dedusting technology is
Under the effect of high-pressure electrostatic power, after so that ash grit is had negative electrical charge, under the action of electric field force, to the pole plate side for having positive charge
To movement, but there are problems for the stability and thermal expansion of material when electrostatic precipitator technology is run at high temperature under high pressure at present.
High temperature oil-containing dusty gas has that temperature is high (400 DEG C or more), containing easy condensed gas (condensation temperature range is wide,
350 DEG C or so begin to condense) the characteristics of.Sampling is being carried out to particulate matter and when measurement of concetration, tar condensing will lead to acquisition/
Contain more tar liquid on the dust particles of measurement, influences the accuracy for sampling and measuring, in addition to this, tar is in flowmeter
And condensed on aspiration pump, instrument can be damaged, causes to sample and measurement work can not be normally carried out.
Traditional flue gas sampling and concentration measurement system is for not oil-containing and the lower flue gas of temperature, and for oil-containing
Dust-laden high-temperature gas samples well not yet and measurement means.As Chinese invention patent application (107144505 A of CN) is open
A kind of measuring device of wet flue gas dust, including unit is used, it is used to acquire the wet flue gas in flue；And measuring unit,
It is connected to the sampling unit, and for measuring to the dust weight in the wet flue gas after acquisition.Due in structure
Limitation, which is only used for carrying out on-line measurement and sampled measurements to the tail portion wet flue gas of coal-burning power plant, and is not used to height
The measurement of warm oil-containing dusty gas.
In view of the above drawbacks, it is necessary to which a kind of particle sampling for high temperature oil-containing dusty gas and measurement of concetration system are provided
System.
Summary of the invention
The purpose of this utility model is that in view of the deficiencies of the prior art, provide a kind of for high temperature oil-containing dusty gas
Dust particles in high temperature oil-containing dusty gas can be carried out sampling by granule density measuring device and accurate measurement dust is dense
Degree, is furthermore possible to that tar is avoided to condense on flowmeter and aspiration pump.
Technical solution provided by the utility model are as follows:
A kind of granule density measuring device for high temperature oil-containing dusty gas, including the dust being sequentially connected to by pipeline
Particle sampling unit, fractional condensaion unit, low temperature quenching unit and aspiration pump；Between the low temperature quenching unit and aspiration pump
Pipeline be equipped with flowmeter；
The dust particles sampling unit includes the first heating and thermal insulation list on the outside of sampling head, sampling pipe and sampling pipe
Member；It is equipped with quartzy filter cylinder in the sampling pipe and the accommodating chamber of quartzy filter cylinder is installed.
Be equipped with the first heating and thermal insulation unit in the utility model on the outside of sampling pipe, the first heating and thermal insulation unit to sampling pipe into
The heating of row auxiliary and heat preservation, it is ensured that entire sampling process carries out in high temperature (being greater than 400 DEG C) environment, makes high temperature oil-containing ash-laden gas
Condensable component exists in a gaseous form in body, and avoiding tar condensing from causing, dust particles sample and measurement process can not carry out.
Preferably, the first heating and thermal insulation unit includes electric heating mechanism and insulating layer, by adjusting electric heating function
Rate guarantees sampling pipe temperature at 400 DEG C or more, it is ensured that tar will not condense in pipe, influence sampled measurements precision and stability.
The material selection rock wool board of insulating layer controls insulating layer temperature outside and is not higher than 50 DEG C with a thickness of 100-200mm.It is further excellent
Choosing, the first heating and thermal insulation unit use detachable structure, facilitate the handling of quartzy filter cylinder in sampling pipe, such as screw thread, card
Buckle structure etc..
Fractional condensaion unit can ensure that high temperature oil-containing gases by condensation point difference fractional condensaion, guarantee cold in the utility model
The mobility of solidifying tar prevents tar supercooling from causing blocking in pipe.
Low temperature quenching unit can guarantee that the condensation of condensable component completely, avoids coke in high temperature oil-containing gases in the utility model
Oil is adhered in flowmeter and aspiration pump, influences equipment stable operation.
The diameter of sampling pipe can be 5-20mm in the utility model, and the diameter of quartzy filter cylinder can be 20-50mm.As
It is preferred that the air inlet junction of the accommodating chamber and sampling pipe is pyramidal structure.Pyramidal structure is used between sampling pipe and accommodating chamber
Connection, facilitate reduce dust-contained airflow from sampling pipe to quartzy filter cylinder when as flow velocity reduces suddenly and caused by turbulent flow, increase
The precision of dust particles sampling.Preferably, the angle of pyramidal structure is no more than 20 °, and lesser coning angle can reduce air-flow warp
Cross the turbulent flow generated.
Accommodating chamber described in the utility model uses dismountable structure.Preferably, the accommodating chamber can be by two companies
Adapter tube is connected through a screw thread to obtain, and one of connecting tube has pyramidal structure.The handling of quartzy filter cylinder may be implemented in the structure,
Guarantee the leakproofness under high temperature simultaneously.
Fractional condensaion unit described in the utility model is made of 1-5 grades of condensing units, is connected between each other by condenser pipe
It is logical；The condensing unit includes tar receiving flask, the condenser pipe on tar receiving flask is arranged in, and be arranged on the outside of condenser pipe
The second heating and thermal insulation unit.Using fractional condensaion unit can prevent the tar condensed to the cold topical hypothermia's area's mobility not
It is good, condenser pipe is blocked, to influence the stable operation of sampling apparatus.
According to the condensing temperature and flow behavior of condensable gas in high temperature oil-containing gases, 1-5 grades can be arranged.The classification is cold
Solidifying unit is equipped with 1-5 grades, is connected between each other by condenser pipe.Preferably, between adjacent condensing unit by condense into
Gas end is connected to condensation outlet side.
Preferably, the condenser pipe is tee tube, including condensation inlet end, condensation outlet side and tar collecting terminal；Institute
Condensation inlet end and condensation outlet side are stated using V-shape structure, V-shape structural base is tar collecting terminal.1st grade of condensing unit
Condensation inlet end be connected to dust particles sampling unit, the condensation outlet side of the condensing unit of end and low temperature quenching unit connect
It is logical.High temperature oil-containing gases bring out gas from condensation inlet end air inlet, from condensation outlet, and the liquid condensed in the process is due to gravity
Effect flows into tar receiving flask by tar collecting terminal.
Preferably, the fractional condensaion unit is equipped with 3 grades, condensation temperature is followed successively by 300 DEG C, 200 DEG C, 100 DEG C.Second
Heating and thermal insulation unit equally includes heating mechanism and insulating layer, by adjusting heating mechanism power, guarantees that the temperature of condenser pipe is
Temperature is set, and insulating layer uses rock wool board, thickness 50-150mm, and control insulating layer temperature outside is not higher than 50 DEG C.
Preferably, being sealed between the tar collecting terminal and tar receiving flask using rubber stopper.
Low temperature quenching unit described in the utility model includes that the drexel bottle of methylene chloride is housed and is set in drexel bottle
The low temperature thermostat bath in outside；The condensation outlet side of the condenser pipe is inserted under the methylene chloride liquid level in drexel bottle, described low
Warm quenching unit is connected to aspiration pump by exhaust pipe, and the exhaust pipe in drexel bottle is located on methylene chloride liquid level.Drexel bottle
In be equipped with dichloromethane solution, for absorb through the still uncooled condensable gas of fractional condensaion unit, prevent it subsequent
It is condensed in flowmeter and aspiration pump, influences the normal operation of instrument.Preferably, low temperature thermostat bath set temperature is -10-0 DEG C,
Guarantee that condensable gas can absorb completely.
Preferably, the aspiration pump is vacuum pump, it to be used for extracting high-temperature oil-containing dusty gas.The aspiration pump connection storage
Gas tank.Coal pyrolysis generate high temperature oil-containing dusty gas in can not coagulate coal gas have the characteristics that it is toxic, explosive, cannot be random
Discharge.The leakage of high-risk coal gas is beneficial to prevent using vacuum pump and air accumulator.
Preferably, the flow is calculated as high-precision mass flowmenter.By measuring the quality of dust in quartzy filter cylinder, with
And flow registration in flowmeter is read, so that dust concentration in high temperature oil-containing dusty gas be calculated.
Granule density measuring device described in the utility model for high temperature oil-containing dusty gas further includes that dynamic pressure is flat
Weigh measuring unit；The kinetic pressure balancing measuring unit includes Pitot tube, and differential manometer, thermocouple, total pressure measurement pipe and static pressure are surveyed
Buret；The Pitot tube, total pressure measurement pipe are connect with differential manometer respectively with static pressure tube.
Thermocouple for respectively measure oil-containing dusty gas pipeline, and after low temperature quenching unit gas temperature.Skin
Trustship is used to measure the total pressure and static pressure in high temperature oil-containing dusty gas pipeline, total pressure measurement pipe and static pressure tube for measuring
The total pressure and static pressure of gas after low temperature quenching unit are connected between Pitot tube and total pressure/static pressure tube by differential manometer, are led to
The power for overregulating vacuum pump changes the speed of gas sampling, when differential manometer balance, shows air velocity and height in sampling pipe
Speed in warm oil-containing dusty gas pipeline is consistent, that is, realizes constant speed measurement.Show to realize constant speed measurement when meeting following formula:
(P0-P0') × β=(P1-P1')
Wherein, P0For the total pressure of Pitot tube measurement, P0' it is the static pressure that Pitot tube measures, (P0-P0') it is oil-containing dusty gas
The dynamic pressure of fluid in pipeline；P1For the total pressure of the gas after low temperature quenching unit, P1' it is the quiet of the gas after low temperature quenching unit
Pressure, (P1-P1') be after low temperature quenching unit gas dynamic pressure；β is regulation coefficient, and numerical value is determined by following formula:
T0For the temperature (DEG C) of fluid in oil-containing dusty gas pipeline, d0For the internal diameter of sampling head；T1For through low temperature chilling list
The temperature (DEG C) of gas, d after member1For the internal diameter of pipe after low temperature quenching unit.
Pitot tube described in the utility model is equipped with third heating and thermal insulation unit.
Preferably, the third heating and thermal insulation unit is arranged at non-measured section of Pitot tube, and the third heating and thermal insulation
Pitot tube between unit and differential manometer keeps exposed.Part external third of the Pitot tube close to high temperature oil-containing dusty gas pipeline
Heating and thermal insulation unit prevents oil-containing dusty gas to be diffused into low-temperature space in Pitot tube, Pitot tube is caused to block；Meanwhile Pitot tube
It keeps exposed close to the part of differential manometer, prevents the portion temperature connecting with differential manometer too high, differential manometer is damaged.Its
In, non-measured section refers to the part not entered in high temperature oil-containing dusty gas pipeline.
Compared with the existing technology, the beneficial effects of the utility model are embodied in:
(1) dust particles sampling unit carries out auxiliary heating and heat preservation to sampling pipe in the utility model, it is ensured that entirely adopts
Sample process carries out in high temperature (being greater than 400 DEG C) environment, deposits condensable component in high temperature oil-containing dusty gas in a gaseous form
Tar condensing is being avoided to cause dust particles sampling and measurement process that can not carry out.
(2) fractional condensaion unit can ensure that high temperature oil-containing gases by condensation point difference fractional condensaion, are protected in the utility model
The mobility for demonstrate,proving condensed tar prevents tar supercooling from causing blocking in pipe.
(3) low temperature quenching unit can guarantee that the condensation of condensable component completely, avoids coke in oil-containing gases in the utility model
Oil is adhered in flowmeter and vacuum pump, influences equipment stable operation.
(4) it is equipped with kinetic pressure balancing measuring unit in the utility model, using kinetic pressure balancing isokinetic sampling, guarantees sampling process
Accuracy.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment middle particle concentration measuring device；
Fig. 2 is the partial structural diagram of dust particles sampling unit in embodiment；
Fig. 3 is the structural schematic diagram of fractional condensaion unit in embodiment.
Wherein, 1, dust particles sampling unit；101, sampling pipe；102, accommodating chamber；103, sampling head；104, quartz filter
Cylinder；105, the first heating and thermal insulation unit；106, air inlet junction；2, fractional condensaion unit；201, inlet end is condensed；202, it condenses
Outlet side；203, the second heating and thermal insulation unit；204, tar receiving flask；205, tar collecting terminal；3, low temperature quenching unit；301,
Drexel bottle；302, low temperature thermostat bath；303, exhaust pipe；4, kinetic pressure balancing measuring unit；401, differential manometer；402, Pitot tube；
403, static pressure tube；404, total pressure measurement pipe；405, third heating and thermal insulation unit；5, flowmeter；6, vacuum pump；7, gas storage
Tank；8, high temperature oil-containing dusty gas pipeline.
Specific embodiment
The utility model is described in further detail in the following with reference to the drawings and specific embodiments, but the protection model of the utility model
It encloses and is not limited to this.
As shown in Figure 1, the granule density measuring device for high temperature oil-containing dusty gas includes dust particles sampling unit
1, fractional condensaion unit 2, low temperature quenching unit 3, kinetic pressure balancing measuring unit 4, flowmeter 5, vacuum pump 6 and air accumulator 7.Its
In, dust particles sampling unit 1, fractional condensaion unit 2, low temperature quenching unit 3, vacuum pump 6 and air accumulator 7 pass sequentially through pipe
Road connection.Pipeline between low temperature quenching unit 3 and vacuum pump 6 is equipped with flowmeter 5, and flowmeter 5 is high-precision mass flow
Meter, by measuring flow registration in the quality of dust in quartzy filter cylinder 104, and reading flowmeter 5, so that high temperature be calculated
Dust concentration in oil-containing dusty gas.
Dust particles sampling unit 1 includes that first heating in 101 outside of sampling head 103, sampling pipe 101 and sampling pipe is protected
Warm unit 105, the interior accommodating chamber 102 for being equipped with quartzy filter cylinder 104 and installing quartzy filter cylinder 104 of sampling pipe 101.Granule density is surveyed
When measuring device work, sampling head 103 is mounted in high temperature oil-containing dusty gas pipeline 8, and other structures then may be mounted at pipeline
Outside.
The diameter of sampling pipe 101 can be 5-20mm, and the diameter of quartzy filter cylinder 104 can be 20-50mm.Accommodating chamber 102
Air inlet junction 106 with sampling pipe 101 is pyramidal structure, and angle is no more than 20o.It is adopted between sampling pipe 101 and accommodating chamber 102
Connected with pyramidal structure, when helping to reduce dust-contained airflow from sampling pipe 101 to quartzy filter cylinder 104 since flow velocity reduces suddenly and
Caused by turbulent flow, increase dust particles sampling precision.
Heat-resisting alloy steel can be used for sampling head 103, the sampling pipe 101 of dust particles sampling unit 1 or 310S is stainless
Steel is realized and stablizes sampling and measurement under hot conditions.
As shown in Fig. 2, accommodating chamber 104 is connected through a screw thread to obtain by two connecting tubes, one of connecting tube has cone
The handling of quartzy filter cylinder 104 may be implemented in shape structure, the structure, while guaranteeing the leakproofness under high temperature.
First heating and thermal insulation unit 105 is installed on the outside of sampling pipe 101.First heating and thermal insulation unit 105 includes electric heating
Mechanism and insulating layer guarantee 101 temperature of sampling pipe at 400 DEG C or more, it is ensured that tar will not be in pipe by adjusting electrical heating power
Interior condensation influences sampled measurements precision and stability.The material selection rock wool board of insulating layer, with a thickness of 100-200mm, control is protected
Warm layer temperature outside is not higher than 50 DEG C.In addition, the first heating and thermal insulation unit 105 uses detachable structure, facilitate in sampling pipe 101
The handling of quartzy filter cylinder 104, detachable structure alternative such as screw thread, buckle structure etc..
As shown in figure 3, the series connection of fractional condensaion unit 2 is equipped with three-level condensing unit, due to every level-one condensing unit structure phase
It is same therefore only to introduce wherein level-one.Condensing unit includes tar receiving flask 204, and the condenser pipe on tar receiving flask 204 is arranged in,
And the second heating and thermal insulation unit 203 on the outside of condenser pipe is set.Condenser pipe is tee tube, including condensation inlet end 201, cold
Solidifying outlet side 202 and tar collecting terminal 205；It condenses inlet end 201 and condensation outlet side 202 uses V-shape structure, V-shape knot
Structure bottom is tar collecting terminal 205.It is sealed between tar collecting terminal 205 and tar receiving flask 204 using rubber stopper.
Adjacent three-level condensing unit passes through condensation inlet end 201 between each other and is connected to condensation outlet side 202.The first order
The condensation inlet end 201 of condensing unit is connected to dust particles sampling unit 1, the condensation outlet side 202 of third level condensing unit
It is connected to low temperature quenching unit 3.Using fractional condensaion unit 2 can prevent the tar condensed to the cold topical hypothermia's area's mobility not
It is good, pipeline is blocked, to influence the stable operation of sampling apparatus.
Fractional condensaion unit 2 is equipped with three group of second heating and thermal insulation unit 203, and condensation temperature is followed successively by 300 DEG C, and 200 DEG C,
100℃.Second heating and thermal insulation unit 2 equally includes that heating mechanism and insulating layer guarantee to condense by adjusting heating mechanism power
The temperature of inlet end 201 and condensation outlet side 202 is setting temperature, and insulating layer uses rock wool board, thickness 50-150mm, and control is protected
Warm layer temperature outside is not higher than 50 DEG C.
Low temperature quenching unit 3 includes the low temperature that the drexel bottle 301 of methylene chloride is housed and is set in 301 outside of drexel bottle
Thermostat 302.The condensation outlet side 202 of third level condensing unit is inserted under the methylene chloride liquid level in drexel bottle 301, gas washing
Bottle 301 is connected to vacuum pump 6 by exhaust pipe 303, is located on methylene chloride liquid level in the exhaust pipe 303 in drexel bottle 301.It washes
Dichloromethane solution is housed in gas cylinder 301, for absorbing through the still uncooled condensable gas of fractional condensaion unit 2, prevents it
It is condensed in subsequent flowmeter 5 and vacuum pump 6, influences the normal operation of instrument.Preferably, low temperature thermostat bath set temperature
It is -10-0 DEG C, guarantees that condensable gas can absorb completely.
Kinetic pressure balancing measuring unit 4 includes Pitot tube 402, and differential manometer 401, thermocouple, total pressure measurement pipe 404, static pressure are surveyed
Buret 403 and third heating and thermal insulation unit 405.402 one end of Pitot tube is mounted in high temperature oil-containing dusty gas pipeline 8,
His structure then may be mounted on the outside of pipeline.Wherein, Pitot tube 402, total pressure measurement pipe 404 and static pressure tube 403 respectively with
Differential manometer 401 connects, and total pressure measurement pipe 404 and static pressure tube 403 are then connected respectively to the exhaust after low temperature quenching unit 3
Pipe 303.
Thermocouple for respectively measure high temperature oil-containing dusty gas pipeline 8, and after low temperature quenching unit 3 gas temperature
Degree.Pitot tube is used to measure the total pressure and static pressure, total pressure measurement pipe 404 and static pressure measurement in high temperature oil-containing dusty gas pipeline 8
Pipe 403 is used to measure the total pressure and static pressure of the gas after low temperature quenching unit 3, between Pitot tube 402 and total pressure/static pressure tube
It is connected by differential manometer 401, the speed that the power by adjusting vacuum pump 6 changes gas sampling shows when differential manometer balance
Air velocity is consistent with the speed in high temperature oil-containing dusty gas pipeline 8 in sampling pipe 101, that is, realizes constant speed measurement.Meet
Show to realize constant speed measurement when following formula:
(P0-P0') × β=(P1-P1')
Wherein, P0For the total pressure that Pitot tube 402 measures, P0' it is the static pressure that Pitot tube 402 measures, (P0-P0') contain for oil-containing
The dynamic pressure of fluid in dirt gas pipeline 8；P1For the total pressure of the gas after low temperature quenching unit 3, P1' for after low temperature quenching unit 3
The static pressure of gas, (P1-P1') be after low temperature quenching unit 3 gas dynamic pressure；β is regulation coefficient, and numerical value is determined by following formula:
T0For the temperature (DEG C) of fluid in oil-containing dusty gas pipeline 8, d0For the internal diameter of sampling head 103；T1For through low temperature urgency
The temperature (DEG C) of gas, d after cold unit 31For the internal diameter of 3 heel row tracheae 303 of low temperature quenching unit.
Third heating and thermal insulation unit 405 is arranged on 402 non-measured sections of Pitot tube, including electric heating mechanism and insulating layer.
Pitot tube 402 between third heating and thermal insulation unit 405 and differential manometer 401 keeps exposed.Pitot tube 402 contains close to high temperature oil-containing
The external third heating and thermal insulation unit 405 in the part of dirt gas pipeline 8, prevents oil-containing dusty gas to be diffused into low in Pitot tube 402
Warm area causes Pitot tube 402 to block；Meanwhile Pitot tube 402 keeps exposed close to the part of differential manometer 401, prevents and differential manometer
The portion temperature of 401 connections is too high, damages to differential manometer 401.Wherein, refer to and do not enter high temperature oil-containing dust-laden for non-measured section
Part in gas pipeline 8.
Coal pyrolysis generate high temperature oil-containing dusty gas in can not coagulate coal gas have the characteristics that it is toxic, explosive, cannot
Arbitrarily discharge.Vacuum pump 6 connects air accumulator 7, and the leakage of high-risk coal gas is beneficial to prevent using vacuum pump 6 and air accumulator 7.
The course of work is as follows:
As shown in Figure 1, high temperature oil-containing dusty gas flows in high temperature oil-containing dusty gas pipeline 8 along the direction A.It opens
Vacuum pump 6, high temperature oil-containing dusty gas passes through sampling head 103, sampling pipe 101 and air inlet junction 106, into accommodating chamber
In quartzy filter cylinder 104 in 102, while the power of the first heating and thermal insulation unit 105 is adjusted, guarantees temperature dimension in sampling pipe 101
It holds at 400-450 DEG C, it is ensured that tar will not condense in sampling pipe 101 and quartzy filter cylinder 104.
High temperature oil-containing dusty gas stays in quartzy filter cylinder 104 by quartzy filter cylinder 104, solid dust particle, and high temperature contains
Oil gas body is gone successively in fractional condensaion unit 2, component grading liquefaction in fractional condensaion unit 2 can be coagulated in gas, and collect
In tar receiving flask 204, added using 203 pairs of condensation inlet ends 201 of the second heating and thermal insulation unit and condensation outlet side 202
Heat heat preservation prevents the liquid component supercooling of condensation, causes mobility bad, and then blocks sampling condenser pipe, causes entirely to sample
Process can not stablize progress.
The component of coagulating that component and a small amount of non-total condensation can not be coagulated is gone successively in low temperature quenching unit 3, in air-flow
Component (condensing temperature the is higher than 0 DEG C) total condensation in low temperature quenching unit 3 can be coagulated, residue can not coagulate component and enter air accumulator 7
Middle storage.
Total pressure and static pressure and sampling pipe in the measurement high temperature oil-containing dusty gas pipeline 8 of kinetic pressure balancing measuring unit 4
Total pressure and static pressure in 101.6 power of vacuum pump is adjusted, so that the dynamic pressure in adjusted high temperature oil-containing dusty gas pipeline 8, with
Dynamic pressure is equal in sampling pipe 101, to reach constant speed measurement.
After the completion of sampling process, the first heating and thermal insulation unit 105 on sampling pipe 101 is dismantled, takes out dust particles sampling
Quartzy filter cylinder 104 in unit 1, the quality for measuring wherein dust particles are calculated in conjunction with the gas flow that flowmeter 5 measures
Dust particles mass concentration in high temperature oil-containing dusty gas out.The utility model can it is accurate in high temperature oil-containing dusty circumstances,
Steadily measure gas middle particle concentration.
Claims (10)
1. a kind of granule density measuring device for high temperature oil-containing dusty gas, which is characterized in that including passing through pipeline sequentially
Dust particles sampling unit, fractional condensaion unit, low temperature quenching unit and the aspiration pump of connection；The low temperature quenching unit with
Pipeline between aspiration pump is equipped with flowmeter；
The dust particles sampling unit includes the first heating and thermal insulation unit on the outside of sampling head, sampling pipe and sampling pipe；Institute
State the accommodating chamber for being equipped with quartzy filter cylinder in sampling pipe and installing quartzy filter cylinder.
2. the granule density measuring device according to claim 1 for high temperature oil-containing dusty gas, which is characterized in that institute
The air inlet junction for stating accommodating chamber and sampling pipe is pyramidal structure.
3. the granule density measuring device according to claim 1 for high temperature oil-containing dusty gas, which is characterized in that institute
It states fractional condensaion unit to be made of 1-5 grades of condensing units, be connected between each other by condenser pipe；The condensing unit includes tar
The condenser pipe on tar receiving flask is arranged in receiving flask, and the second heating and thermal insulation unit on the outside of condenser pipe is arranged in.
4. the granule density measuring device according to claim 3 for high temperature oil-containing dusty gas, which is characterized in that institute
Stating condenser pipe is tee tube, including condensation inlet end, condensation outlet side and tar collecting terminal；The condensation inlet end be condensed out
Gas end uses V-shape structure, and V-shape structural base is tar collecting terminal.
5. the granule density measuring device according to claim 3 for high temperature oil-containing dusty gas, which is characterized in that institute
Stating low temperature quenching unit includes the low temperature thermostat bath that the drexel bottle of methylene chloride is housed and is set on the outside of drexel bottle；It is described cold
The condensation outlet side of solidifying pipe is inserted under the methylene chloride liquid level in drexel bottle, and the low temperature quenching unit and aspiration pump pass through row
Tracheae connection.
6. the granule density measuring device according to claim 1 for high temperature oil-containing dusty gas, which is characterized in that institute
Accommodating chamber is stated using dismountable structure.
7. the granule density measuring device according to claim 1 for high temperature oil-containing dusty gas, which is characterized in that institute
State aspiration pump connection air accumulator.
8. the granule density measuring device according to claim 1 for high temperature oil-containing dusty gas, which is characterized in that also
Including kinetic pressure balancing measuring unit；The kinetic pressure balancing measuring unit includes Pitot tube, differential manometer, thermocouple, total pressure measurement pipe
And static pressure tube；The Pitot tube, total pressure measurement pipe are connect with differential manometer respectively with static pressure tube.
9. the granule density measuring device according to claim 8 for high temperature oil-containing dusty gas, which is characterized in that institute
Pitot tube is stated equipped with third heating and thermal insulation unit.
10. the granule density measuring device according to claim 9 for high temperature oil-containing dusty gas, which is characterized in that
The third heating and thermal insulation unit is arranged at non-measured section of Pitot tube, and between the third heating and thermal insulation unit and differential manometer
Pitot tube keeps exposed.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693090A (en) * | 2018-06-01 | 2018-10-23 | 浙江大学 | A kind of granule density measuring device for high temperature oil-containing dusty gas |
| CN113358422A (en) * | 2021-07-14 | 2021-09-07 | 马钢奥瑟亚化工有限公司 | Method for producing and preparing coal tar pitch |
-
2018
- 2018-06-01 CN CN201820851857.8U patent/CN208350570U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693090A (en) * | 2018-06-01 | 2018-10-23 | 浙江大学 | A kind of granule density measuring device for high temperature oil-containing dusty gas |
| CN113358422A (en) * | 2021-07-14 | 2021-09-07 | 马钢奥瑟亚化工有限公司 | Method for producing and preparing coal tar pitch |
| CN113358422B (en) * | 2021-07-14 | 2023-02-10 | 马钢奥瑟亚化工有限公司 | Method for producing and preparing coal tar pitch |
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