CN102304374B - Leakage-free recovery device and recovery method of coal carbonization gas - Google Patents
Leakage-free recovery device and recovery method of coal carbonization gas Download PDFInfo
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- CN102304374B CN102304374B CN 201110221653 CN201110221653A CN102304374B CN 102304374 B CN102304374 B CN 102304374B CN 201110221653 CN201110221653 CN 201110221653 CN 201110221653 A CN201110221653 A CN 201110221653A CN 102304374 B CN102304374 B CN 102304374B
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Abstract
The invention discloses a leakage-free recovery device and a recovery method of a coal carbonization gas. The leakage-free recovery device comprises a heating furnace, wherein a pyrolyzer which outwardly stretches is laterally arranged in the heating furnace; the inner end head of the pyrolyzer is communicated with a gas scavenging tube which outwardly stretches to be communicated with a scavenging gas inlet; the outer end head of the pyrolyzer is sealed by a liquid seal tank, and the middle of the pyrolyzer is communicated with a pyrolysis product delivery pipe; the pyrolysis product delivery pipe downwardly stretches to a gas-liquid separator submerged in a condensation tank; one end head of a gas sampling pipe is placed in the gas-liquid separator and outwardly stretches, and is communicated with a gas sampling port and a gas storage tank; and the gas storage tank is provided with a stirrer and also communicated with a pressure balancer and a communication pipe thereof. In the invention, the liquid seal device is arranged so that the whole air tightness of a carbonization system is ensured, and thus the leakage-free recovery of the coal carbonization gas is achieved; a gas scavenging structure is arranged at the bottom of the pyrolysis gas to scavenge the coal carbonization system, and coal carbonization is carried out when the concentration of scavenging gas is above 99%, thereby ensuring the truth and reliability of compositions and content measuring values of carbonization gas.
Description
Technical field
The present invention relates to a kind of coal carbonization gas retrieving arrangement and recovery method thereof, specifically, the heating and the temperature controlling system that comprise dry distillation of coal device, with the pyrolysis system of liquid seal device, a kind of coal carbonization gas that cooling, the condensation of pyrolysis product and gas recovery system consist of is without leaking retrieving arrangement and recovery method thereof.
Background technology
Coal carbonization refers to coal under isolated air conditions, and decomposes generates the process of coal gas, tar, crude benzol and coke.Difference by the heating final temperature can be divided into three kinds: 500～600 ℃ are low-temperature pyrolysis; 700～900 ℃ is medium temperature carbonization; 900～1100 ℃ is high temperature carbonization.
For evaluating various coals to the adaptability of liquefaction, and identify the raw material property of coal and predict the productive rate of various products in the low-temperature pyrolysis industrial production, all need to carry out the middle low-temperature pyrolysis experimental study of coal.Gas retort is the major equipment of low-temperature pyrolysis production technique, and it should guarantee, and process efficiency is high, easy to operate, data are reliable.The heat-supplying mode of gas retort is divided into external-heat and internal heat type.The heat that the external-heat stove is supplied with coal charge is to be imported into by the furnace wall outside; The internal heat type stove is passed to coal charge by the thermal purging body with heat, and air heat purges body and directly enters the destructive distillation chamber, passes the granular destructive distillation bed of material of piece, and heat is passed to the bed of material.
The existing exothermic heating mode that mostly adopts is carried out the low-temperature pyrolysis of coal, and comparatively method commonly used is the low temperature aluminium rice steamer destructive distillation of GB/T 480-2000 coal and the tubular type low-temperature pyrolysis of GB1341 coal.
GB/T 480-2000 standard law has stipulated to check the airtight methods of aluminium Zeng Gai and aluminium rice steamer body: the aluminium Zhen that covers tightly is immersed in the water 10～30mm dark, inflate in rice steamer, make approximately 1961.3Pa(gauge pressure of rice steamer internal gas pressure), keep approximately 15 s under this pressure, as occuring without bubble, be airtight.As still can not airtightly adopting the method for grinding to make it reach airtight.Do like this to guarantee that aluminium discriminates unheated time aluminium and discriminate with aluminium and discriminate resistance to air loss between covering, but low-temperature pyrolysis is in the situation that be heated and carry out, under heated condition, whether can be airtight, also not mentioned in the literature.Aluminium rice steamer delivery line adopts tight gastight cork stopper to be connected with Erlenmeyer flask, aluminium rice steamer delivery line should stretch in bottle, built-in length is not less than half of bottle height, but must not with bottle at the bottom of contact, another aperture by cork stopper is inserted slight curving glass airway of people, for deriving coal gas, each junction must be airtight.To the resistance to air loss of delivery line joint, do not describe the bubble-tight embodiment of concrete inspection in detail.
In GB1341-87, having stipulated that in the brown coal and bitumionus coal, productive rate and the bituminous coal coking property of low-temperature pyrolysis product measured, do not related to the analysis to composition of coal gas and productive rate, is only that coal gas is derived (point burns or discharge outdoor) by airway.Integral construction is adopted in the design of destructive distillation pipe, reduced interface, do not have the resistance to air loss problem of destructive distillation pipe, but need to completely cut off air heating when the coal low-temperature pyrolysis, and there is a large amount of air in destructive distillation pipe inside.In being subjected to thermal process, inevitably can react with coal or coal gas.When composition of coal gas is analyzed, will produce very large error.At destructive distillation pipe opening part, be that simple requirement can not be leaked gas, but embodiment and not mentioned.
Existing document CN101880535 A also discloses " a kind of brown coal destructive distillation device and method ", in the situation that brown coal are not processed, does not use gas or solid thermal to purge body, and brown coal are directly dewatered and low-temperature pyrolysis.Its main purpose only is to obtain coal tar and semicoke, does not relate to the analysis to dry distillation gas component and component concentration.
In the above-mentioned dry distillation of coal excessively, for the data that make mensuration authentic and valid, must assurance the resistance to air loss of system.Shorten the connection portion of testing apparatus or the resistance to air loss of the front aluminium Zeng Gai of inspection of destructive distillation experiment and aluminium rice steamer body, can't guarantee the whole resistance to air loss of distillation system, inevitably sneak into a certain amount of air in carbonization gas.When coal carries out middle low-temperature pyrolysis, contain CO, CO in the coal carbonization gas of generation
2, CH
4, N
2Etc. component, the main component of air is O
2, N
2And a small amount of CO
2, sneaking into of air will directly affect O in carbonization gas
2, N
2The accuracy of content analysis; Simultaneously, when there is air in internal system, under heating condition, O
2Can be as ignition dope and coal carbonization gas or the coal generation CO that reacts
2, like this will be to the CO in analytical results
2Component concentration exerts an influence; In addition, a small amount of CO in air
2Also can affect CO
2The accuracy of component concentration.Therefore, in the coal carbonization gas composition analysis, for the data that make mensuration authentic and valid, in the urgent need to a kind of coal carbonization gas without leaking retrieving arrangement and recovery method thereof.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of coal carbonization gas without leaking retrieving arrangement and recovery method thereof, to realize the whole resistance to air loss of dry distillation of coal system, guarantee accuracy and the reliability of composition and the assay of coal carbonization gas.
To achieve these goals, a kind of coal carbonization gas provided by the present invention comprises process furnace, temperature controller, thermopair, pyrolyzer, gas-liquid separator, condensation liquid bath, gas-holder, agitator, gas purging pipe and liquid seal trough without leaking retrieving arrangement; Its constitutional features is:
Horizontal in a process furnace have an outward extending pyrolyzer.
The inner termination of described pyrolyzer is communicated with the gas purging pipe and stretches out and be communicated with the sweep gas entrance; External end head is sealed by liquid seal trough, and intermediate connection has the pyrolysis product delivery line.
Described pyrolysis product delivery line extends downward in the gas-liquid separator that is submerged in the condensation liquid bath.
One termination of one gas sample tube is placed in gas-liquid separator and stretches out, and is communicated with gas sampling mouth and gas-holder.
Be provided with agitator in described gas-holder, also be communicated with pressurizer and communicating pipe thereof.
In the scheme of above-mentioned coal carbonization gas without the leakage retrieving arrangement: the body of heater of process furnace is rectangular configuration, and surrounding and the bottom of its rectangle body of heater are provided with electric heater unit; The central authorities of its square furnace are provided with thermopair.Be provided with the recirculated water entrance in the bottom of condensation liquid bath.Bottom at gas-holder is provided with water port.
The present invention is a kind of for the recovery method of above-mentioned coal carbonization gas without the leakage retrieving arrangement, and its method is as follows:
General＜3.2mm coal grain is placed in the inner termination of pyrolyzer; By the gas purging pipe, pyrolyzer is carried out gas purging, remove the gas in pyrolyzer.
When sweeping gas concentration reaches 99% when above, begin to carry out coal carbonization.
After being warming up to 260 ℃ with the speed of 20 ℃/min, be heated to 600 ℃ with the speed of 5 ℃/min, constant temperature 40min samples to carbonization gas in real time and adopts gas-chromatography analysis.
After constant temperature finished, the gas that stirs in gas-holder mixed, and adopted gas-chromatography that the total mixed gas of destructive distillation is analyzed, and measured the O in its carbonization gas
2, N
2, CH
4, CO, CO
2, C
2H
4And C
2H
6Content.
A kind of coal carbonization gas of the present invention compared with prior art, by liquid seal device is set, has guaranteed the whole resistance to air loss of dry distillation of coal system without leaking retrieving arrangement and recovery method thereof, has realized that coal carbonization gas reclaims without leaking; Be provided with the gas purging structure in pyrolysis gas bottom, system cleans to the dry distillation of coal, reaches 99% when above in sweeping gas concentration, carries out the dry distillation of coal, has guaranteed verity and the reliability of carbonization gas composition and assay value.
Description of drawings
Fig. 1 is that coal carbonization gas of the present invention is without the structural representation that leaks retrieving arrangement.
Fig. 2 is the structural representation of pyrolyzer liquid seal device of the present invention.
In figure: 1: temperature controller; 2: thermopair; 3: process furnace; 4: pyrolyzer; 5: circulating water outlet; 6: condensate trap; 7: gas-liquid separator; 8: the recirculated water entrance; 9: gas sample tube; 10: the gas sampling mouth; 11: gas-holder; 12: agitator; 13: water port; 14: pressure equilibrium communicating pipe; 15: pressurizer; 16: the pyrolyzer heating zone; 17: the gas purging pipe; 18: the sweep gas entrance; 19: the pyrolysis product delivery line; 20 dress discharge ports; 21: liquid seal trough.
Embodiment
Technical problem proposed by the invention is the accurate quantification problem when gas composition is analyzed of bringing due to the structure deficiency of existing installation.When being analyzed, coal gas need to analyze each component in coal gas, to determine its calorific value and technic index, but due to the accuracy that directly has influence on each index that enters of its air, the not accuracy problem to the gas composition quantitative analysis of bringing therefrom.The present invention is by implementing its technical scheme and embodiment is described in further detail, and those of ordinary skill in the art can realize described purpose of the present invention, also can embody beneficial effect of the present invention simultaneously.Its embodiment is as follows:
A kind of coal carbonization gas of the present invention is without leaking retrieving arrangement and recovery method thereof, and its described device comprises the heating of dry distillation of coal device and temperature controlling system,, condensation cooling with pyrolysis system, the pyrolysis product of liquid seal device and gas recovery system.
Wherein, heating and temperature controlling system comprise process furnace and temperature controller; Pyrolysis system comprises pyrolyzer and the gas purging structure with liquid seal device that fills discharge port; Pyrolysis product is cooling, condensation and gas recovery system comprise gas-liquid separator, with gas-holder and the pressure-balancing adjuster of fluid-tight and whipping appts.
Heating in the present invention and temperature controlling system adopt the external heat structure of furnace bottom furnace wall, and the thermopair 2 that is inserted pyrolyzer 4 tops by furnace roof carries out the monitoring of temperature, and temperature controller 1 carries out temperature and controls.
Pyrolysis system in the present invention comprises gas purging pipe, heating tube, tightness system, gas purging pipe 17 is positioned at the afterbody of pyrolyzer 4, its role is to remove pyrolyzer 4 inner airs, airborne oxygen and nitrogen can affect and make in the coal gas that pyrolysis produces the nitrogen oxygen level higher, affect its calorific value; The heating zone of pyrolyzer 4 is used for holding coal charge, and coal charge is in the heating zone decomposes, and the coal gas of generation is discharged by gas and tar delivery line; The dress discharge port is by the wedge shape plug seal, and tightness system is positioned at dress discharge port place, is connected by bite type with pyrolyzer 4, tightness system is column structure, sealing liquid is housed therebetween, and the sealing liquid loadings is as the criterion to be not less than the dress discharge port, and its purpose is to solve a gas leak phenomenon slightly of dress discharge port.
Pyrolysis product cooling system in the present invention is made of circulating condensing water tank, and water coolant carries out condensation to the gas-liquid separator in condensation and gas recovery system.
Condensation in the present invention and gas recovery system are made of gas-liquid separator, gas-holder, pressure equaliser.Gas-liquid separator is connected with the tar delivery line with gas, by conduit, gas-liquid separator is connected with gas-holder, and pressure equaliser is connected in the bomb bottleneck, is used for Monitoring and Controlling bomb external and internal pressure; The bomb bottleneck is provided with spiral stirrer, and the gas uniform that is used for when gas collecting finishes distributes; Bottleneck is provided with liquid seal trough, and connecting portion is played sealing function; The bomb bottom is provided with water port, is used for quantitatively producing the volume of coal gas.
Referring to Fig. 1 and Fig. 2, implement coal carbonization gas of the present invention without leaking retrieving arrangement, comprise the heating of dry distillation of coal device and temperature controlling system,, condensation cooling with pyrolysis system, the pyrolysis product of liquid seal device and gas recovery system.
At first feed coal enters destructive distillation pipe heating zone 16 by dress discharge port 20, to the interior topped up with water of liquid seal trough 21 at destructive distillation pipe port place.Logical sweep gas in from sweep gas entrance 18 to system, the air in purging system.When coal carries out middle low-temperature pyrolysis, contain CO, CO in the coal carbonization gas of generation
2, CH
4, N
2Etc. component; The main component of air is O
2, N
2And a small amount of CO
2, when internal system contains O
2The time, under heating condition, can be as ignition dope and coal gas, the coal generation CO that reacts
2, like this will be to the CO in analytical results
2Component concentration exerts an influence, simultaneously airborne a small amount of CO
2Also can affect CO
2The measurement of component concentration, for making air purging in distillation system clean and check the resistance to air loss of total system, use chromatograph that system's end gas component concentration is analyzed, when measure sweep gas content near 100% the time, think that the system air cleaning is clean and resistance to air loss is good, stop logical sweep gas.
In retort process, the pyrolysis product that coal produces under heating condition is derived through pyrolysis product delivery line 19, after tar and water are cooled, is stored in gas-liquid separator 7, the coal carbonization gas that produces is discharged water from gas-holder 11, the volume of discharging water is the volume of dry distillation gas.The generation of coal carbonization gas has increased internal system pressure, make pressure equilibrium mensuration manage two ends under pressure-acting and liquid level difference occurs, at this moment need by regulating the water port 13 of gas-holder 11 bottoms, make internal system pressure consistent with normal atmosphere, when pressure equilibrium is measured pipe both sides liquid level and is on the same level line, valve-off; Constantly keeping pressure equilibrium mensuration to manage the both sides liquid level is on the same level line.
Concrete implementation step: 1. the coal sample of 20g left and right granularity＜3.2mm is positioned over pyrolyzer destructive distillation pipe bottom, connected system each several part; 2. dry distillation of coal system is carried out gas purging, check the resistance to air loss of distillation system and the air in scavenge system, when sweeping gas concentration reaches 99% when above, begin to carry out coal carbonization; 3. be warming up to final temperature with given pace, and the insulation regular hour, in real time to carbonization gas sampling and chromatogram ration analysis; 4. after insulation finishes, stir gas in gas-holder, gas is mixed, the total mixed gas of destructive distillation is carried out gas chromatographic analysis, measure O in carbonization gas
2, N
2, H
2, CH
4, CO, CO
2, C
2H
4, C
2H
6Content.
Adopt the GC-950 type gas chromatograph of Haixin Chromatograph Instrument Co., Ltd., Shanghai's production and the GC 9890A type gas chromatograph of Shanghai Ling Hua Instr Ltd. to carry out pyrolysis coal gas compositional analysis.GC-950 type gas chromatograph is double T CD, and two channels, sampler temperature are 50 ℃, and carrier gas is H
2, flow rate of carrier gas is 40ml/min, 40 ℃ of column temperatures, and the 5A molecular sieve column can detect O
2, N
2, CH
4, the gas such as CO content, the GDDX-502 post can detect CO
2, C
2H
4, C
2H
6Content Deng gas; GC 9890A type gas chromatograph sampling actuator temperature is 80 ℃, and carrier gas is N
2, flow rate of carrier gas is 40ml/min, 80 ℃ of column temperatures, and 5A molecular sieve column post can detect H
2Content.
Embodiment 1
Adopt aluminium to discriminate the destructive distillation mode and carry out coal carbonization.
Coal: Hulun Buir coal; Weight: 20.003g; Granularity＜3.2mm; Distillation system sweeping gas: helium; Temperature programming: the speed with 20 ℃/min is warming up to 260 ℃, and then the speed with 5 ℃/min heats, 600 ℃ of constant temperature 40min of final temperature.The coal carbonization gas gas chromatographic analysis the results are shown in Table 1.
Table 1 aluminium is discriminated dry distiller different temperature points gas composition content
| The gas production numbering | Temperature/℃ | He/% | O 2/% | N 2/% | CH 4/% | CO/% | CO 2/% | C 2H 4/% | C 2H 6/% |
| 1 | 100 | 97.05 | 0.88 | 3.57 | ? | ? | ? | ? | 0.02 |
| 2 | 200 | 96.54 | 0.09 | 0.43 | ? | ? | ? | ? | 0.02 |
| 3 | 300 | 95.33 | 0.21 | 0.81 | ? | ? | ? | ? | 0.03 |
| 4 | 350 | 96.01 | 0.19 | 0.93 | ? | ? | 0.26 | 0.04 | 0.08 |
| 5 | 400 | 50.38 | 0.25 | 0.78 | ? | ? | 1.59 | 0.56 | 0.12 |
| 6 | 450 | 43.25 | 0.31 | 1.13 | 1.80 | 5.25 | 36.80 | 0.46 | 0.17 |
| 7 | 500 | 28.06 | 0.12 | 0.56 | 9.59 | 10.90 | 53.80 | 1.33 | 2.45 |
| 8 | 550 | 9.85 | 0.09 | 0.81 | 18.76 | 12.99 | 44.01 | 1.65 | 4.62 |
| 9 | 600 | 1.02 | 0.05 | 0.52 | 29.02 | 10.96 | 32.93 | 0.52 | 2.23 |
| Constant temperature 10min | 600 | 0.83 | 0.07 | 0.53 | 29.99 | 9.31 | 31.52 | 0.53 | 1.46 |
| Constant temperature 20min | 600 | 0.58 | 0.08 | 0.36 | 30.11 | 6.64 | 40.89 | 1.25 | 3.82 |
| Constant temperature 30min | 600 | 0.72 | 0.12 | 0.5 | 31.03 | 5.32 | 38.36 | 0.91 | 3.55 |
| Constant temperature 40min | 600 | 0.61 | 0.09 | 0.56 | 30.25 | 5.46 | 37.81 | 0.76 | 3.37 |
| Total gas | ? | 31.18 | 2.91 | 12.58 | 10.49 | 5.49 | 24.25 | 0.56 | 1.68 |
As can be seen from Table 1, adopt aluminium to discriminate coal carried out destructive distillation, in total gas nitrogen oxygen than and air in nitrogen oxygen compare more approachingly, may be the infiltration that there is air in the carbonization gas recovery system, extraneous air enters distillation system, causes O in carbonization gas
2Gas and N
2Gas is dense, can not true and accurate composition and the content thereof of reflection coal carbonization gas.
Embodiment 2
Adopt aluminium rice steamer destructive distillation mode, the condensation of gas recovery system is carried out fluid-tight.
Coal: Hulun Buir coal; Weight: 19.996g; Granularity＜3.2mm; Distillation system sweeping gas: helium; Temperature programming: the speed with 20 ℃/min is warming up to 260 ℃, and then the speed with 5 ℃/min heats, 600 ℃ of constant temperature 40min of final temperature.The coal carbonization gas gas chromatographic analysis the results are shown in Table 2.
Different temperature points coal carbonization gas component concentration after table 2 fluid-tight
| The gas production numbering | Temperature/℃ | He/% | O 2/% | N 2/% | CH 4/% | CO/% | CO 2/% | C 2H 4/% | C 2H 6/% |
| 1 | 100 | 95.08 | 0.27 | 1.03 | ? | ? | ? | ? | ? |
| 2 | 200 | 95.53 | 0.22 | 0.77 | ? | ? | ? | ? | ? |
| 3 | 300 | 96.49 | 0.15 | 0.65 | ? | ? | ? | ? | ? |
| 4 | 350 | 94.01 | 0.24 | 0.94 | ? | ? | 0.36 | ? | ? |
| 5 | 400 | 93.02 | 0.19 | 0.93 | ? | 0.05 | 4.48 | ? | ? |
| 6 | 450 | 17.00 | 0.41 | 1.92 | 3.67 | 7.83 | 63.21 | 0.91 | 0.54 |
| 7 | 500 | 0.84 | 0.32 | 1.64 | 13.83 | 13.93 | 54.05 | 1.56 | 3.81 |
| 8 | 550 | 0.44 | 0.08 | 0.75 | 24.28 | 10.99 | 38.90 | 1.24 | 3.89 |
| 9 | 600 | 0.34 | 0.10 | 0.41 | 27.85 | 10.05 | 33.73 | 0.63 | 1.99 |
| Constant temperature 10min | 600 | 0.55 | 0.12 | 0.79 | 28.78 | 10.50 | 31.74 | 0.59 | 1.36 |
| Constant temperature 20min | 600 | 0.85 | 1.03 | 1.25 | 29.07 | 10.30 | 29.61 | 0.39 | 1.07 |
| Constant temperature 30min | 600 | 0.84 | 1.32 | 2.10 | 29.30 | 10.21 | 29.30 | 0.26 | 0.97 |
| Constant temperature 40min | 600 | 1.68 | 1.37 | 2.33 | 29.46 | 10.06 | 28.95 | 0.23 | 0.98 |
| Total gas | ? | 10.57 | 1.04 | 3.64 | 23.35 | 10.45 | 33.17 | 0.60 | 1.90 |
As seen from Table 2, on the basis of aluminium rice steamer, the condensation of gas recovery system is carried out the nitrogen oxygen level in gas composition reduces to some extent after fluid-tight, nitrogen oxygen has certain deviation than comparing in air, the possibility that can exhausted air enters distillation system, in whole retort process, air only may be present in inside aluminium rice steamer device.
Embodiment 3
Adopt a kind of coal carbonization gas of the present invention to carry out the coal carbonization experiment without leaking retrieving arrangement.
Coal: Hulun Buir coal; Weight: 20.006g; Granularity＜3.2mm; Distillation system sweeping gas: helium; Temperature programming: the speed with 20 ℃/min is warming up to 260 ℃, and then the speed with 5 ℃/min heats, 600 ℃ of constant temperature 40min of final temperature.The coal carbonization gas gas chromatographic analysis the results are shown in Table 3.
Table 3 helium is done sweep gas and is adopted device different temperature points coal carbonization gas component concentration of the present invention
| The gas production numbering | Temperature/℃ | He/% | O 2/% | N 2/% | CH 4/% | CO/% | CO 2/% | C 2H 4/% | C 2H 6/% |
| 1 | 100 | 96.70 | 0.24 | 1.01 | ? | ? | 0.12 | ? | ? |
| 2 | 200 | 95.53 | 0.13 | 0.50 | ? | ? | 0.08 | ? | ? |
| 3 | 300 | 94.72 | 0.41 | 1.61 | ? | ? | 0.15 | ? | ? |
| 4 | 350 | 95.39 | 0.23 | 0.82 | ? | 0.02 | 0.50 | ? | 0.02 |
| 5 | 400 | 92.80 | 0.14 | 0.88 | ? | 0.27 | 5.31 | ? | ? |
| 6 | 410 | 83.53 | 0.35 | 1.88 | ? | 0.62 | 6.89 | ? | ? |
| 7 | 420 | 65.57 | 0.25 | 1.27 | 0.64 | 2.26 | 18.17 | ? | ? |
| 8 | 430 | 30.93 | 0.23 | 1.19 | 3.08 | 6.53 | 56.50 | 0.51 | 0.47 |
| 9 | 440 | 22.31 | 0.15 | 0.82 | 4.14 | 7.81 | 56.08 | 0.50 | 0.39 |
| 10 | 450 | 15.78 | 0.46 | 2.04 | 5.20 | 8.76 | 56.26 | 0.51 | 0.63 |
| 11 | 500 | 0.89 | 0.03 | 0.34 | 13.99 | 13.00 | 51.32 | 1.83 | 4.26 |
| 12 | 550 | 0.22 | 0.12 | 0.54 | 22.91 | 8.89 | 34.51 | 1.20 | 3.98 |
| 13 | 600 | 0.16 | 0.03 | 0.20 | 28.87 | 9.39 | 28.68 | 0.40 | 1.28 |
| Constant temperature 10min | 600 | 0.14 | 0.13 | 0.58 | 26.89 | 11.98 | 25.69 | 0.30 | 0.73 |
| Constant temperature 20min | 600 | 0.17 | 0.39 | 1.85 | 30.29 | 11.07 | 23.41 | 0.17 | 0.53 |
| Constant temperature 30min | 600 | 0.25 | 0.08 | 0.49 | 30.37 | 11.20 | 21.93 | 0.19 | 0.61 |
| Constant temperature 40min | 600 | 0.33 | 0.23 | 1.12 | 31.13 | 11.55 | 22.15 | 0.17 | 0.47 |
| Total gas | ? | 6.47 | 0.29 | 0.93 | 24.01 | 10.05 | 29.79 | 0.64 | 1.75 |
Helium is as the sweeping gas of distillation system, but accurate analysis goes out each component concentration in coal carbonization gas.
Can find out, a kind of coal carbonization gas of the present invention has guaranteed the whole resistance to air loss of distillation system without leaking retrieving arrangement, is leaked into distillation system and coal carbonization gas and leaks and affect the accuracy of carbonizing gas composition and assay thereby solved extraneous air; Liquid seal device has guaranteed the resistance to air loss of whole distillation system, has realized that coal carbonization gas reclaims without leaking; Bottom pyrolysis gas, the gas purging structure is set, system cleans to the dry distillation of coal, adopts helium as sweeping gas, has guaranteed that carbonization gas forms and the true and reliable property of assay value.
Claims (2)
1. a coal carbonization gas without leaking retrieving arrangement, comprises a process furnace (3);
Horizontal in described process furnace (3) have an outward extending pyrolyzer (4);
The inner termination of a described pyrolyzer (4) is communicated with gas purging pipe (17) and stretches out and be communicated with sweep gas entrance (18); External end head is by liquid seal trough (21) sealing, and intermediate connection has pyrolysis product delivery line (19);
Described pyrolysis product delivery line (19) extends downward in the gas-liquid separator (7) that is submerged in condensate trap (6);
One termination of one gas sample tube (9) is placed in gas-liquid separator (7) and stretches out, and another termination is placed in gas-holder (11), and is provided with gas sampling mouth (10) on gas sample tube (9);
Be provided with agitator (12) in described gas-holder (11), and be linked with pressure equilibrium communicating pipe (14), the other end of pressure equilibrium communicating pipe (14) is communicated with pressurizer (15);
The body of heater of described process furnace (3) is rectangular configuration, and its surrounding and bottom are provided with electric heater unit; Its central authorities are provided with thermopair (2).
2. one kind is used for coal carbonization gas claimed in claim 1 without the recovery method that leaks retrieving arrangement, and its described recovery method is to be placed in the pyrolysis gas heating zone (16) of pyrolyzer (4) inner termination less than 3.2mm coal grain; By gas purging pipe (17), pyrolyzer (4) is carried out gas purging, remove the gas in pyrolyzer (4);
When sweeping gas concentration reaches 99% when above, begin to carry out coal carbonization;
After being warming up to 260 ℃ with the speed of 20 ℃/min, be heated to 600 ℃ with the speed of 5 ℃/min, constant temperature 40min samples to carbonization gas in real time and adopts gas-chromatography analysis;
After constant temperature finished, the gas that stirs in gas-holder (11) mixed, and adopted gas-chromatography that the total mixed gas of destructive distillation is analyzed, and measured the O in its carbonization gas
2, N
2, CH
4, CO, CO
2, C
2H
4And C
2H
6Content.
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| CN112088838B (en) * | 2020-09-29 | 2021-12-24 | 邢国兵 | Turtle hatching system |
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| CN1962065A (en) * | 2006-10-27 | 2007-05-16 | 东北电力大学 | A low-temperature carbonization device using microwave |
| CN101658192A (en) * | 2009-09-23 | 2010-03-03 | 云南农业大学 | Application of eupatorium adenophorum vinegar liquid as plant nematocide |
| CN201660597U (en) * | 2010-04-15 | 2010-12-01 | 河南理工大学 | Fine coal pyrolyzing equipment |
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| 郭小杰等.现代煤气化制合成气得工艺.《能源与节能》.2011,(第7期),第14-16页第1-3部分. |
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