CN204779479U - Matter integration integrated system is carried in pyrolysis of coal - Google Patents
Matter integration integrated system is carried in pyrolysis of coal Download PDFInfo
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- CN204779479U CN204779479U CN201520376981.XU CN201520376981U CN204779479U CN 204779479 U CN204779479 U CN 204779479U CN 201520376981 U CN201520376981 U CN 201520376981U CN 204779479 U CN204779479 U CN 204779479U
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Abstract
The utility model relates to a matter integration system is put forward in the pyrolysis of coal, connects gradually along the process route to be equipped with dry pyrolysis unit, carry matter coal cooling unit and humidification ejection of compact unit, through setting up dry pyrolysis unit middlings drying and coal pyrolytic reaction accomplish in same revolving canister, effectively reduce the equipment investment, improve the technology reliability, through setting up carrying and utilizing among the matter coal cooling unit material of cold air in to the cloth tubulation to carry out indirect cooling, equipment is simple, and the security is good, and waste water waste gas productivity is low, and the hot -air that obtains after the heat transfer carries out heat recovery and recycles, through setting up utilizing screw conveyer to carry out the in -process carried to carrying the matter coal, adopt in the humidification ejection of compact unit the spray thrower is to carrying the matter coal humidification of spraying water, and easy operation is reliable, and can adjust the working water jet capacity according to the technology needs, and product quality is good, the technology environmental protection.
Description
Technical field
The utility model relates to a kind of improving quality of coal by pyrolysis integration integrated system, belongs to the technical field of improving quality of coal by pyrolysis.
Background technology
China is the country that a rich coal resources and petroleum and natural gas resource are relatively deficient, going from bad to worse in recent years along with the northern area of China atmospheric environment, directly burn on the impact of environment for reducing coal, improve the utilization ratio of coal resources simultaneously, both at home and abroad increasing mechanism and the scholar coal sub-prime that begins one's study utilizes technology, carry out middle low temperature pyrogenation by feed coal, obtain a kind of coal utilization method of the coal gas of high value, coal tar and upgraded coal.
At present, domestic adopted coal pyrolysis process for upgrading, the series connection of many employing three cover independent systems realizes, and namely the series connection of drying oven, carbonization reaction stove and cooling (quenching) stove forms pyrolysis process for upgrading core.Chinese patent literature CN102250633A discloses a kind of method that external heat type rotary furnace carries out brown coal upgrading, and concrete steps comprise; (1) raw material brown coal are sent into rotary drying stove, make raw material brown coal temperature under the environment of 100 ~ 300 DEG C, carry out drying and desorption 20 ~ 40 minutes, the gas removing the moisture in brown coal and be adsorbed in the pore of coal; (2) coal after dry and desorption enters and turns round charring furnace pyrolysis upgrading, thermo-cracking 40min ~ 120min at temperature of charge 450 ~ 700 DEG C, semicoke and the high temperature rough gas containing tar is obtained after thermo-cracking upgrading, the working pressure of revolution charring furnace is between pressure-fired and tiny structure, and concrete numerical value is ± 500mmH
2o; (3) semicoke by producing after pyrolysis upgrading is discharged by the stove tail turning round charring furnace, sends into revolution cool furnace quenching cooling, and cooled semicoke sends into the finished product semicoke that the screening of sieve coke installation obtains different-grain diameter again; (4) the high temperature rough gas containing tar by producing after thermo-cracking upgrading is derived by turning round charring furnace airway, enters tar coal gas separation and purification device, carries out absorbing and purifying, obtain high-quality tar finished product and high heating value gas finished product; Wherein a part of finished product coal gas and air send into roasting kiln burning, heat smoke after burning sends into the thermal source as material self thermo-cracking in revolution carbonization reaction stove chuck, and the heat smoke after having heated material with certain calorific value delivers to the dry raw coal of rotary drying stove by high-temperature blower.But, in above-mentioned technical process, between rotary drying stove and revolution carbonization reaction stove, turn round carbonization reaction stove and turn round between cool furnace and all need to arrange connecting device specially, and need strict seal between three cover system of bf body, but the sealing for high-temp solid material is technological difficulties all the time, therefore, there is the shortcomings such as number of devices is many, device is huge, complicated layout, reliability of technology are low, energy consumption is high in above-mentioned technique, in addition, owing to containing a large amount of dust in feed coal, very easily cause equipment pipe to block, and follow-up oil gas product dedusting workload is large.
Utility model content
Technical problem to be solved in the utility model is to propose a kind of structure simple, energy-efficient, eco-friendly improving quality of coal by pyrolysis integration integrated system.
For solving the problems of the technologies described above, the technical solution of the utility model is:
A kind of improving quality of coal by pyrolysis integration integrated system, it is connected with dry thermal cracking unit, upgraded coal cooling unit and humidification discharging unit successively along operational path;
Described dry thermal cracking unit, comprises the rotating cylinder of arranged transversely and is sheathed on the external jacket of described rotating cylinder side-wall outer side, forming exhaust gases passes between described rotating cylinder and described external jacket; The front end of described rotating cylinder is provided with opening for feed, and the rear end of described rotating cylinder is provided with discharge port;
Dryer section, conversion zone and holding-zone is comprised successively along rotating cylinder described in operational path direction, Liao Feng district is provided with in described dryer section and conversion zone boundary, described Liao Feng district is provided with center inner core and is located on the spiral outside the inner core of described center, described center inner core and described rotating cylinder are coaxial setting, and vertically the tip height of described center inner core is lower than the height of materials in described rotating cylinder; Some conversion zone heating tubes are axially arranged with in the inside of described conversion zone and along described rotating cylinder, described conversion zone heating tube along described rotating cylinder inwall even circumferential distribution and the two ends of described conversion zone heating tube are fixed on described rotating cylinder, some holding-zone heating tubes are axially arranged with in the inside of described holding-zone and along described rotating cylinder, described holding-zone heating tube along described rotating cylinder inwall even circumferential distribution and the two ends of described holding-zone heating tube be fixed on described rotating cylinder
Along external jacket described in operational path direction being provided with successively dry flue gas outlet, dry flue gas import, heating exhanst gas outlet, heating gas approach and insulation exhanst gas outlet; Described dry flue gas import and described center inner core are communicated with by a pipe connecting and arrange; The two ends of described conversion zone heating tube are communicated with described heating gas approach with described heating exhanst gas outlet respectively; The two ends of described holding-zone heating tube are communicated with described insulation exhanst gas outlet with described heating gas approach respectively;
Described upgraded coal cooling unit, comprise the cylindrical shell longitudinally arranged and several cloth tubulations vertically be arranged in parallel being positioned at described inner barrel, the top of described cylindrical shell is communicated with the discharge port of described dry thermal cracking unit and arranges, the top of described cylindrical shell is provided with hot air outlet, and bottom is provided with inlet of cold air and water vapour relief outlet;
Described humidification discharging unit, is communicated with the bottom of described cylindrical shell and arranges, and described humidification discharging unit comprises worm conveyor and spray thrower, and described spray thrower is positioned at the top of described worm conveyor to carry out spray process to the convey materials of described worm conveyor.
At described heating gas approach place, the inner side that is positioned at described external jacket arranges two flue gas shunting devices, and described flue gas shunting device is herring-bone spreader plate.
Be communicated with the opening for feed of described rotating cylinder and arrange feeder, described feeder is elephant trunk or feeding screw.
Be communicated with the front end of described rotating cylinder and be provided with ash discharge case, the bottom of described ash discharge case is provided with ash discharging hole, and the sidewall of described ash discharge case is provided with pneumatic outlet;
Be communicated with the rear end of described rotating cylinder and be provided with feed box, the bottom of described feed box is provided with discharge port, and the top of described feed box is provided with air guide port.
Along described rotating cylinder central shaft to, the per-cent that the length of described dryer section, conversion zone and holding-zone accounts for rotating cylinder overall length is followed successively by 40% ~ 45%, 40% ~ 45%, 10% ~ 20%.
Along described rotating cylinder central shaft to, the length of described conversion zone heating tube is less than or equal to described conversion zone length, and the length of described holding-zone heating tube is less than or equal to the length of described holding-zone.
Vertically, the height of materials in described rotating cylinder exceeds 100 ~ 200mm than the bottom of described center inner core.
Be positioned at above described cloth tubulation be provided with material sparger in described inner barrel.
The diameter of described cloth tubulation is DN200 ~ DN400, and the length of described cloth tubulation and the length ratio of described cylindrical shell are 0.8:1 ~ 1:1.
Also be connected with described upgraded coal cooling unit and weight induction device or material level induction installation are set.
Improving quality of coal by pyrolysis integration integrated system described in the utility model, technical process is as follows:
(1) feed coal enters described dry thermal cracking unit, first utilizes heat smoke to carry out drying treatment to feed coal by indirect heating and direct-fired array mode in described dryer section, the water content of feed coal is down to less than 0.5% and obtains moisture-free coal; While carrying out drying to feed coal, coal dust trickle in feed coal is taken away and removes by the flue gas directly contacted with feed coal; Afterwards, heat smoke is utilized to carry out reverse-flow indirect heating to described moisture-free coal at described conversion zone, described moisture-free coal is heated to 350 ~ 600 DEG C and carries out pyrolytic reaction, reaction generates tar gas, coal gas and upgraded coal, described upgraded coal utilizes heat smoke to carry out cocurrent flow type heating after entering described holding-zone, insulation for some time makes the Volatile in described upgraded coal; And described tar gas and coal gas are derived, obtain high temperature upgraded coal and enter described upgraded coal cooling unit;
(2) at described upgraded coal cooling unit, utilize freezing air to carry out indirect heat exchange cooling to described high temperature upgraded coal, the temperature of described high temperature upgraded coal be reduced within 200 DEG C, the warm air obtained after heat exchange carries out heat recuperation;
(3) upgraded coal after cooling enters described humidification discharging unit, in the process of discharging, utilize spray thrower to carry out work of water sprinkling for better material moisture to described upgraded coal, upgraded coal is lowered the temperature further simultaneously, when described upgraded coal is discharged from discharge port, be and there is certain water content and temperature is the upgraded coal finished product of about 70 DEG C.
Technique scheme of the present utility model has the following advantages compared to existing technology:
(1) improving quality of coal by pyrolysis integration integrated system described in the utility model, described dry thermal cracking unit is connected with successively along operational path, upgraded coal cooling unit and humidification discharging unit, first, complete in same rotating cylinder by arranging coal drying and pyrolysis of coal reaction in described dry thermal cracking unit, avoid being connected equipment owing to need arrange specially between drying plant with pyrolytic reaction equipment in prior art, cause the problem of system sealing difference, effectively can also reduce facility investment simultaneously, improve reliability of technology, and the utility model is when carrying out feed coal drying treatment, trickle coal dust can be removed simultaneously, be conducive to later processing operation, guarantee that pyrolysis of coal reaction can steady in a long-termly run, in effective solution prior art, in pyrolytic process of coal, dust easily causes equipment pipe to block and the large problem of follow-up oil gas product dedusting workload,
Secondly, utilize freezing air indirectly to cool the material in cloth tubulation by arranging in described upgraded coal cooling unit, equipment is simple, and security is good, and waste water and gas productive rate is low, and the warm air obtained after heat exchange carries out heat recuperation recycling;
Finally, by arranging in described humidification discharging unit in the process utilizing worm conveyor to carry upgraded coal, described spray thrower is adopted to carry out work of water sprinkling for better material moisture to upgraded coal, operation is simple and reliable, and can need to regulate injection flow rate according to technique, good product quality, technique environmental protection, and, the direct conveying after cooling upgraded coal discharging is carried out by connecting described worm conveyor in the lower end of described upgraded coal cooling unit, thus can realize by utilizing the revolution speed of screw of described worm conveyor to regulate height of materials in the cylindrical shell of described upgraded coal cooling unit, achieve the sealing of material simultaneously, without the need to setting up unclassified stores sealing equipment again.
(2) improving quality of coal by pyrolysis integration integrated system described in the utility model, by heating gas approach place, the inner side being positioned at described external jacket arranges two described flue gas shunting devices, under the effect of described flue gas shunting device, heat smoke is divided into three parts after heating gas approach enters, first part's heat smoke is moved to the described heating exhanst gas outlet being positioned at described conversion zone front end by the exhaust gases passes between described conversion zone and described external jacket, second section heat smoke is moved to the described heating exhanst gas outlet being positioned at described conversion zone front end by described conversion zone heating tube, Part III heat smoke is moved to the described insulation exhanst gas outlet being positioned at described holding-zone rear end by the exhaust gases passes between described holding-zone and described external jacket and described holding-zone heating tube, first, second section flue gas provides heat to upgraded coal pyrolytic reaction, Part III flue gas provides heat to upgraded coal insulation, thus be conducive to improving upgraded coal pyrolysis efficiency and product ature of coal amount.
(3) improving quality of coal by pyrolysis integration integrated system described in the utility model, ash discharge case is provided with by being communicated with the front end of described rotating cylinder, thus the trickle coal dust that when feed coal can be carried out drying treatment, flue gas is taken away carries out unifying to collect, guarantee that pyrolysis of coal reaction can steady in a long-term run further, effectively avoid dust easily to cause equipment pipe to block and the large problem of follow-up oil gas product dedusting workload.
(4) improving quality of coal by pyrolysis integration integrated system described in the utility model, by being connected with described upgraded coal cooling unit, weight induction device or material level induction installation are set, be conducive to the revolution speed of screw realizing worm conveyor described in Automated condtrol, namely automatization regulates the discharging speed of described upgraded coal cooling unit, thus make the height of materials in described upgraded coal cooling unit cylindrical shell remain at certain altitude, achieve the material sealing of described upgraded coal cooling unit discharge outlet.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
Fig. 1 is the structural representation of improving quality of coal by pyrolysis described in the utility model integration integrated system.
In figure, Reference numeral is expressed as: 1-pneumatic outlet, 2-ash discharge case, 3-feeder, 4-dry flue gas exports, 5-rotating cylinder, 6-external jacket, 7-dryer section, 8-spiral, the import of 9-dry flue gas, 10-pipe connecting, 11-center inner core, 12-heats exhanst gas outlet, 131-conversion zone heating tube, 132-holding-zone heating tube, 14-conversion zone, 15-heats gas approach, 16-flue gas shunting device, 17-holding-zone, 18-is incubated exhanst gas outlet, 19-air guide port, 20-feed box, 21-feed box discharge port, 22-upgraded coal cooling unit opening for feed, 23-material sparger, 24-cylindrical shell, 25-hot air outlet, 26-cloth tubulation, 27-inlet of cold air, 28-water vapour relief outlet, 29-upgraded coal cooling unit discharge port, 30-humidification discharging unit opening for feed, 31-spray thrower, 32-worm conveyor, 33-humidification discharging unit discharge port, 34-ash discharging hole.
Embodiment
Embodiment 1
The present embodiment provides a kind of improving quality of coal by pyrolysis integration integrated system, is connected with dry thermal cracking unit, upgraded coal cooling unit and humidification discharging unit successively along operational path.
Described dry thermal cracking unit comprises the rotating cylinder 5 of arranged transversely and is sheathed on the external jacket 6 of described rotating cylinder 5 side-wall outer side, forms exhaust gases passes between described rotating cylinder 5 and described external jacket 6; The front end of described rotating cylinder 5 is provided with opening for feed, and the rear end of described rotating cylinder 5 is provided with discharge port.
Dryer section 7, conversion zone 14 and holding-zone 17 is comprised successively along rotating cylinder 5 described in operational path direction, in the present embodiment, along described rotating cylinder 5 central shaft to, the percentage that the length of described dryer section 7, conversion zone 14 and holding-zone 17 accounts for rotating cylinder overall length is respectively 40%, 40%, 10%, in the present embodiment, the length of described dryer section 7, conversion zone 14 and holding-zone 17 is respectively 35m, 35m, 10m.
Liao Feng district is provided with in described dryer section 7 and conversion zone 14 boundary, the spiral 8 that described Liao Feng district is provided with center inner core 11 and is located on outside described center inner core 11, described center inner core 11 is coaxial setting with described rotating cylinder 5, the external diameter of described center inner core 11 is determined by rotating cylinder 5 internal diameter and height of materials, be specially: height of materials-(external diameter of the internal diameter-center inner core of rotating cylinder)/2=200mm, in the present embodiment, the internal diameter of described rotating cylinder 5 is 3800mm, height of materials is 1100mm, the external diameter of described center inner core 11 is 2000mm, 200mm is exceeded than the bottom of described center inner core 11 with the height of materials in guarantee vertically described rotating cylinder 5, make material by during described spiral 8 formed material envelope, described dryer section 7 is scurried into prevent pyrolytic reaction gas.
In the present embodiment, inner at described conversion zone 14, be axially arranged with 20 conversion zone heating tubes 131, to increase the heat interchanging area of conversion zone 14 along described rotating cylinder 5; Described conversion zone heating tube 131 distributes along rotating cylinder 5 inwall even circumferential, spacing between described conversion zone heating tube 131 and rotating cylinder 5 inwall and the spacing between adjacent described conversion zone heating tube 131 are 200mm, and the two ends of described conversion zone heating tube 131 are weldingly fixed on described rotating cylinder 5.
Inner at described holding-zone 17, be axially arranged with 20 holding-zone heating tubes 132, to increase the heat interchanging area of holding-zone 17 along described rotating cylinder 5; Described holding-zone heating tube 132 is all along the distribution of rotating cylinder 5 inwall even circumferential, and the spacing between described holding-zone heating tube 132 and rotating cylinder 5 inwall and the spacing between adjacent described holding-zone heating tube 132 are 200mm; The two ends of described holding-zone heating tube 132 are weldingly fixed on described rotating cylinder 5.
In the present embodiment, described conversion zone heating tube 131 and described holding-zone heating tube 132 all adopt the weldless steel tube of DN300, the length of described conversion zone heating tube 131 equals the length of described conversion zone, and the length of described holding-zone heating tube 132 equals the length of described holding-zone.
Along external jacket 6 described in operational path direction being provided with successively dry flue gas outlet 4, dry flue gas import 9, heating exhanst gas outlet 12, heating gas approach 15 and insulation exhanst gas outlet 18; Described dry flue gas import 9 and described center inner core 11 are communicated with by a pipe connecting 10 and arrange; The two ends of described conversion zone heating tube are communicated with described heating gas approach 15 with described heating exhanst gas outlet 12 respectively; The two ends of described holding-zone heating tube 132 are communicated with described insulation exhanst gas outlet 18 with described heating gas approach 15 respectively; At described heating gas approach 15 place, the inner side that is positioned at described external jacket 6 arranges two flue gas shunting devices 16.
In the present embodiment, described flue gas shunting device 16 is herring-bone spreader plate.Under the effect of described flue gas shunting device 16, heat smoke is divided into three parts after heating gas approach 15 enters, first part's heat smoke is moved to the described heating exhanst gas outlet 12 being positioned at described conversion zone 14 front end by the exhaust gases passes between described conversion zone 14 and described external jacket 6, second section heat smoke is moved to the described heating exhanst gas outlet 12 being positioned at described conversion zone 14 front end by described conversion zone heating tube 131, Part III heat smoke is moved to the described insulation exhanst gas outlet 18 being positioned at described holding-zone 17 rear end by the exhaust gases passes between described holding-zone 17 and described external jacket 6 and holding-zone heating tube 132, first, second section flue gas provides heat to upgraded coal pyrolytic reaction, Part III flue gas provides heat to upgraded coal insulation, thus be conducive to improving upgraded coal pyrolysis efficiency and product ature of coal amount.
Described upgraded coal cooling unit comprises the cylindrical shell 24 longitudinally arranged and several cloth tubulations 26 vertically be arranged in parallel being positioned at described cylindrical shell 24 inside, in the present embodiment, the diameter of described cloth tubulation gets DN200, and the length of described cloth tubulation and the length ratio of described cylindrical shell are 0.9:1.The top of described cylindrical shell 24 is provided with upgraded coal cooling unit opening for feed 22, described upgraded coal cooling unit opening for feed 22 is communicated with the discharge port of described dry thermal cracking unit and arranges, the top of described cylindrical shell 24 is provided with hot air outlet 25, bottom is provided with inlet of cold air 27 and water vapour relief outlet 28, and bottom is provided with upgraded coal cooling unit discharge port 29.
Described humidification discharging unit is communicated with the bottom of described cylindrical shell 24 and arranges, and described humidification discharging unit opening for feed 30 docks with described upgraded coal cooling unit discharge port 29.Described humidification discharging unit comprises worm conveyor 32 and spray thrower 31, described spray thrower 31 is positioned at the top of described worm conveyor 32 to carry out the process of spray humidification to the convey materials of described worm conveyor 32, upgraded coal finished product after humidification is discharged by the discharging unit discharge port 33 that is humidified, and the water vapour produced in humidification process and dust are discharged from the water vapour relief outlet 28 of described upgraded coal cooling unit.
Based on the improving quality of coal by pyrolysis integral process of the improving quality of coal by pyrolysis integral system described in the present embodiment, technical process is as follows:
(1) after feed coal enters dry thermal cracking unit, first drying treatment is carried out in dryer section 7, heat smoke to feed coal by indirect and direct combined heated mode, the water content of feed coal is down to less than 0.5%, while carrying out drying to feed coal, coal dust trickle in feed coal is taken away and removes by the flue gas directly contacted with feed coal; Afterwards, heat smoke is utilized to carry out adverse current indirect heating to moisture-free coal at described conversion zone 14, moisture-free coal is heated to 350 ~ 600 DEG C and carries out pyrolytic reaction, reaction generates tar gas, coal gas and upgraded coal, heating is flowed, held for some time, to ensure that in upgraded coal, volatile matter is separated out to a certain extent by heat smoke after upgraded coal enters holding-zone 17, tar gas and coal gas are derived, the high temperature upgraded coal obtained enters upgraded coal cooling unit through discharge port;
(2), after high temperature upgraded coal enters upgraded coal cooling unit, utilize freezing air to carry out indirect heat exchange to upgraded coal, upgraded coal temperature be reduced within 200 DEG C, the warm air obtained after heat exchange separately uses it for anything else after carrying out heat recuperation;
(3) cooled upgraded coal enters humidification discharging unit, in the process of discharging, utilize spray thrower 31 to carry out work of water sprinkling for better material moisture, upgraded coal is lowered the temperature further simultaneously, when this upgraded coal is discharged from discharge port, be and there is certain water content and temperature is the upgraded coal finished product of about 70 DEG C.
Improving quality of coal by pyrolysis integration integrated system described in the present embodiment, by being connected with described dry thermal cracking unit successively along operational path, upgraded coal cooling unit and humidification discharging unit, first, complete in same rotating cylinder 5 by arranging coal drying and pyrolysis of coal reaction in described dry thermal cracking unit, avoid being connected equipment owing to need arrange specially between drying plant with pyrolytic reaction equipment in prior art, cause the problem of system sealing difference, effectively can also reduce facility investment simultaneously, improve reliability of technology, and the utility model is when carrying out feed coal drying treatment, trickle coal dust can be removed simultaneously, be conducive to later processing operation, guarantee that pyrolysis of coal reaction can steady in a long-termly run, in effective solution prior art, in pyrolytic process of coal, dust easily causes equipment pipe to block and the large problem of follow-up oil gas product dedusting workload, secondly, utilize freezing air indirectly to cool the material in cloth tubulation 26 by arranging in described upgraded coal cooling unit, equipment is simple, and security is good, and waste water and gas productive rate is low, and the warm air obtained after heat exchange carries out heat recuperation recycling, finally, by arranging in described humidification discharging unit in the process utilizing worm conveyor 32 pairs of upgraded coal to carry, described spray thrower 31 pairs of upgraded coal are adopted to carry out work of water sprinkling for better material moisture, operation is simple and reliable, and can need to regulate injection flow rate according to technique, good product quality, technique environmental protection, and, the direct conveying after cooling upgraded coal discharging is carried out by connecting described worm conveyor 32 in the lower end of described upgraded coal cooling unit, thus can realize by utilizing the revolution speed of screw of described worm conveyor 32 to regulate height of materials in the cylindrical shell 24 of described upgraded coal cooling unit, achieve the sealing of material simultaneously, without the need to setting up unclassified stores sealing equipment again.
Embodiment 2
The present embodiment provides a kind of improving quality of coal by pyrolysis integration integrated system, and its structure as shown in Figure 1, is connected with dry thermal cracking unit, upgraded coal cooling unit and humidification discharging unit successively along operational path.
The rotating cylinder 5 that described dry thermal cracking unit comprises arranged transversely and the external jacket 6 be sheathed on outside described rotating cylinder 5, form exhaust gases passes between described rotating cylinder 5 and described external jacket 6; The front end of described rotating cylinder 5 is provided with opening for feed, and the rear end of described rotating cylinder 5 is provided with discharge port.As preferred embodiment, in the present embodiment, be communicated with arrange feeder 3 with the opening for feed of described rotating cylinder 5, described feeder 3 is elephant trunk; Be communicated with the front end of described rotating cylinder 5 and be provided with ash discharge case 2, the bottom of described ash discharge case 2 is provided with ash discharging hole 34, and the sidewall of described ash discharge case 2 is provided with pneumatic outlet 1; Be communicated with the rear end of described rotating cylinder 5 and be provided with feed box 20, the bottom of described feed box 20 is provided with feed box discharge port 21, the top of described feed box 20 is provided with air guide port 19, and the sidewall of described feed box 20 is also provided with inspection manhole (not shown).
Dryer section 7, conversion zone 14 and holding-zone 17 is comprised successively along rotating cylinder 5 described in operational path direction, in the present embodiment, along described rotating cylinder 5 central shaft to, the percentage that the length of described dryer section 7, conversion zone 14 and holding-zone 17 accounts for rotating cylinder overall length is respectively 45%, 45%, 10%.
Liao Feng district is provided with in described dryer section 7 and conversion zone 14 boundary, the spiral 8 that described Liao Feng district is provided with center inner core 11 and is located on outside described center inner core 11, described center inner core 11 is coaxial setting with described rotating cylinder 5, in the present embodiment, the external diameter of described center inner core 11 is determined by rotating cylinder 5 internal diameter and height of materials, be specially: height of materials-(external diameter of the internal diameter-center inner core of rotating cylinder)/2=100mm, to ensure that the bottom height of vertically described center inner core 11 is lower than the height of materials in described rotating cylinder 5, make material by during described spiral 8 formed material envelope, described dryer section 7 is scurried into prevent pyrolytic reaction gas.
In the present embodiment, inner at described conversion zone 14, be axially arranged with 48 conversion zone heating tubes 131, to increase the heat interchanging area of conversion zone 14 along described rotating cylinder 5; Described conversion zone heating tube 131 distributes along rotating cylinder 5 inwall even circumferential, spacing between described conversion zone heating tube 131 and rotating cylinder 5 inwall and the spacing between adjacent described conversion zone heating tube 131 are 120mm, and the two ends of described conversion zone heating tube 131 are weldingly fixed on described rotating cylinder 5.
Inner at described holding-zone 17, be axially arranged with 48 holding-zone heating tubes 132, to increase the heat interchanging area of holding-zone 17 along described rotating cylinder 5; Described holding-zone heating tube 132 is all along the distribution of rotating cylinder 5 inwall even circumferential, and the spacing between described holding-zone heating tube 132 and rotating cylinder 5 inwall and the spacing between adjacent described holding-zone heating tube 132 are 120mm; The two ends of described holding-zone heating tube 132 are weldingly fixed on described rotating cylinder 5.
In the present embodiment, described conversion zone heating tube 131 and described holding-zone heating tube 132 preferably adopt the weldless steel tube of DN200, the length of described conversion zone heating tube 131 is slightly less than the length of described conversion zone, and the length of described holding-zone heating tube 132 is slightly less than the length of described holding-zone.
Along external jacket 6 described in operational path direction being provided with successively dry flue gas outlet 4, dry flue gas import 9, heating exhanst gas outlet 12, heating gas approach 15 and insulation exhanst gas outlet 18; Described dry flue gas import 9 and described center inner core 11 are communicated with by a pipe connecting 10 and arrange; The two ends of described conversion zone heating tube are communicated with described heating gas approach 15 with described heating exhanst gas outlet 12 respectively; The two ends of described holding-zone heating tube 132 are communicated with described insulation exhanst gas outlet 18 with described heating gas approach 15 respectively; At described heating gas approach 15 place, the inner side that is positioned at described external jacket 6 arranges two flue gas shunting devices 16.
In the present embodiment, described flue gas shunting device 16 is herring-bone spreader plate.Under the effect of described flue gas shunting device 16, heat smoke is divided into three parts after heating gas approach 15 enters, first part's heat smoke is moved to the described heating exhanst gas outlet 12 being positioned at described conversion zone 14 front end by the exhaust gases passes between described conversion zone 14 and described external jacket 6, second section heat smoke is moved to the described heating exhanst gas outlet 12 being positioned at described conversion zone 14 front end by described conversion zone heating tube 131, Part III heat smoke is moved to the described insulation exhanst gas outlet 18 being positioned at described holding-zone 17 rear end by the exhaust gases passes between described holding-zone 17 and described external jacket 6 and holding-zone heating tube 132, first, second section flue gas provides heat to upgraded coal pyrolytic reaction, Part III flue gas provides heat to upgraded coal insulation, thus be conducive to improving upgraded coal pyrolysis efficiency and product ature of coal amount.
Described upgraded coal cooling unit comprises the cylindrical shell 24 longitudinally arranged and several cloth tubulations 26 vertically be arranged in parallel being positioned at described cylindrical shell 24 inside, in the present embodiment, the diameter of described cloth tubulation gets DN300, and the length of described cloth tubulation and the length ratio of described cylindrical shell are 0.8:1.The top of described cylindrical shell 24 is provided with upgraded coal cooling unit opening for feed 22, described upgraded coal cooling unit opening for feed 22 is communicated with described feed box discharge port 21 and arranges, the top of described cylindrical shell 24 is provided with hot air outlet 25, bottom is provided with inlet of cold air 27 and water vapour relief outlet 28, and bottom is provided with upgraded coal cooling unit discharge port 29.As preferred embodiment, the present embodiment is inner and be positioned at above described cloth tubulation 26 and be provided with material sparger 23 at described cylindrical shell 24, to make material be evenly distributed in cloth tubulation 26 described in each, the freezing air outside described cloth tubulation 26 is utilized indirectly to cool the material being positioned at described cloth tubulation 26.
Described humidification discharging unit is communicated with the bottom of described cylindrical shell 24 and arranges, and described humidification discharging unit opening for feed 30 docks with described upgraded coal cooling unit discharge port 29.Described humidification discharging unit comprises worm conveyor 32 and spray thrower 31, described spray thrower 31 is positioned at the top of described worm conveyor 32 to carry out the process of spray humidification to the convey materials of described worm conveyor 32, upgraded coal finished product after humidification is discharged by the discharging unit discharge port 33 that is humidified, and the water vapour produced in humidification process and dust are discharged from the water vapour relief outlet 28 of described upgraded coal cooling unit.
As preferred embodiment, in the present embodiment, be connected with described upgraded coal cooling unit and material level induction installation is set, be conducive to the revolution speed of screw realizing worm conveyor 32 described in Automated condtrol, namely automatization regulates the discharging speed of described upgraded coal cooling unit, thus make the height of materials in described upgraded coal cooling unit cylindrical shell 24 remain at certain altitude, achieve the material sealing at described upgraded coal cooling unit discharge port 29 place.
Based on the improving quality of coal by pyrolysis integral process of the improving quality of coal by pyrolysis integration integrated system described in the present embodiment, technical process is as follows:
(1) after feed coal enters dry thermal cracking unit by described feeder 3, first drying treatment is carried out in dryer section 7, heat smoke to feed coal by indirect and direct combined heated mode, the water content of feed coal is down to less than 0.5%, while drying is carried out to feed coal, coal dust trickle in feed coal is taken away and is blown into described ash discharge case 2 and carries out unifying to collect by the flue gas directly contacted with feed coal, guarantee that pyrolysis of coal reaction can steady in a long-termly run further, dust is effectively avoided easily to cause equipment pipe to block and the large problem of follow-up oil gas product dedusting workload,
Afterwards, heat smoke is utilized to carry out adverse current indirect heating to moisture-free coal at described conversion zone 14, moisture-free coal is heated to 350 ~ 600 DEG C and carries out pyrolytic reaction, reaction generates tar gas, coal gas and upgraded coal, heating is flowed after upgraded coal enters holding-zone 17 by heat smoke, enter described feed box 20 after held for some time, the tar gas generate pyrolytic reaction and coal gas are derived, and the high temperature upgraded coal obtained enters described upgraded coal cooling unit after described feed box discharge port 21 is discharged;
(2) after high temperature upgraded coal enters described upgraded coal cooling unit, described material sparger 23 is adopted upgraded coal to be assigned in each cloth tubulation 26, the freezing air outside described cloth tubulation 26 and upgraded coal is utilized to carry out indirect heat exchange, cool within 200 DEG C to upgraded coal, upgraded coal after cooling is discharged from described upgraded coal cooling unit discharge port 29, and the warm air obtained after heat exchange separately uses it for anything else after carrying out heat recuperation;
(3) cooled upgraded coal enters humidification discharging unit, in the process of discharging, utilize spray thrower 31 pairs of upgraded coal to carry out work of water sprinkling for better material moisture, upgraded coal is lowered the temperature further simultaneously, when this upgraded coal is discharged from described humidification discharging unit discharge port 33, be and have certain water content and temperature is the upgraded coal finished product of about 70 DEG C, the water vapour produced in humidification process and dust are discharged from the water vapour relief outlet 28 of described upgraded coal cooling unit.
Embodiment 3
The present embodiment provides a kind of improving quality of coal by pyrolysis integration integrated system, is connected with dry thermal cracking unit, upgraded coal cooling unit and humidification discharging unit successively along operational path.
Described dry thermal cracking unit comprises the rotating cylinder 5 of arranged transversely and is sheathed on the external jacket 6 of described rotating cylinder 5 side-wall outer side, is provided with exhaust gases passes between described rotating cylinder 5 and described external jacket 6; The front end of described rotating cylinder 5 is provided with opening for feed, and the rear end of described rotating cylinder 5 is provided with discharge port.As preferred embodiment, in the present embodiment, be communicated with arrange feeder 3 with the opening for feed of described rotating cylinder 5, described feeder 3 is feeding screw; Be communicated with the front end of described rotating cylinder 5 and be provided with ash discharge case 2, the bottom of described ash discharge case 2 is provided with ash discharging hole 34, and the sidewall of described ash discharge case 2 is provided with pneumatic outlet 1; Be communicated with the rear end of described rotating cylinder 5 and be provided with feed box 20, the bottom of described feed box 20 is provided with feed box discharge port 21, and the top of described feed box 20 is provided with air guide port 19, and the sidewall of described feed box 20 is also provided with inspection manhole.
Dryer section 7, conversion zone 14 and holding-zone 17 is comprised successively along rotating cylinder 5 described in operational path direction, in the present embodiment, along described rotating cylinder 5 central shaft to, the per-cent that the length of described dryer section 7, conversion zone 14 and holding-zone 17 accounts for rotating cylinder overall length is followed successively by 42%, 42%, 16%.
Liao Feng district is provided with in described dryer section 7 and conversion zone 14 boundary, the spiral 8 that described Liao Feng district is provided with center inner core 11 and is located on outside described center inner core 11, described center inner core 11 is coaxial setting with described rotating cylinder 5, in the present embodiment, the internal diameter of described rotating cylinder 5 is 5200mm, height of materials is 1400mm, the external diameter of described center inner core 11 is 2800mm, height of materials vertically in described rotating cylinder 5 exceeds 200mm than the bottom of described center inner core 11, make material by during described spiral 8 formed material envelope, described dryer section 7 is scurried into prevent pyrolytic reaction gas.
In the present embodiment, inner at described conversion zone 14, be axially arranged with 50 six roots of sensation conversion zone heating tubes 131, to increase the heat interchanging area of conversion zone 14 along described rotating cylinder 5; Described conversion zone heating tube 131 distributes along rotating cylinder 5 inwall even circumferential, spacing between described conversion zone heating tube 131 and rotating cylinder 5 inwall and the spacing between adjacent described conversion zone heating tube 131 are 80mm, and the two ends of described conversion zone heating tube 131 are weldingly fixed on described rotating cylinder 5.
Inner at described holding-zone 17, be axially arranged with 50 six roots of sensation holding-zone heating tubes 132, to increase the heat interchanging area of holding-zone 17 along described rotating cylinder 5; Described holding-zone heating tube 132 is all along the distribution of rotating cylinder 5 inwall even circumferential, and the spacing between described holding-zone heating tube 132 and rotating cylinder 5 inwall and the spacing between adjacent described holding-zone heating tube 132 are 80mm; The two ends of described holding-zone heating tube 132 are weldingly fixed on described rotating cylinder 5.
In the present embodiment, described conversion zone heating tube 131 and described holding-zone heating tube 132 all adopt the weldless steel tube of DN250, the length of described conversion zone heating tube 131 equals the length of described conversion zone, and the length of described holding-zone heating tube 132 equals the length of described holding-zone.
Along external jacket 6 described in operational path direction being provided with successively dry flue gas outlet 4, dry flue gas import 9, heating exhanst gas outlet 12, heating gas approach 15 and insulation exhanst gas outlet 18; Described dry flue gas import 9 and described center inner core 11 are communicated with by a pipe connecting 10 and arrange; The two ends of described conversion zone heating tube are communicated with described heating gas approach 15 with described heating exhanst gas outlet 12 respectively; The two ends of described holding-zone heating tube 132 are communicated with described insulation exhanst gas outlet 18 with described heating gas approach 15 respectively; At described heating gas approach 15 place, the inner side that is positioned at described external jacket 6 arranges two flue gas shunting devices 16.
In the present embodiment, described flue gas shunting device 16 is herring-bone spreader plate.Under the effect of described flue gas shunting device 16, heat smoke is divided into three parts after heating gas approach 15 enters, first part's heat smoke is moved to the described heating exhanst gas outlet 12 being positioned at described conversion zone 14 front end by the exhaust gases passes between described conversion zone 14 and described external jacket 6, second section heat smoke is moved to the described heating exhanst gas outlet 12 being positioned at described conversion zone 14 front end by described conversion zone heating tube 131, Part III heat smoke is moved to the described insulation exhanst gas outlet 18 being positioned at described holding-zone 17 rear end by the exhaust gases passes between described holding-zone 17 and described external jacket 6 and holding-zone heating tube 132, first, second section flue gas provides heat to upgraded coal pyrolytic reaction, Part III flue gas provides heat to upgraded coal insulation, thus be conducive to improving upgraded coal pyrolysis efficiency and product ature of coal amount.
Described upgraded coal cooling unit comprises the cylindrical shell 24 longitudinally arranged and several cloth tubulations 26 vertically be arranged in parallel being positioned at described cylindrical shell 24 inside, and in the present embodiment, the diameter of described cloth tubulation preferably gets DN400; The length of described cloth tubulation and the length ratio of described cylindrical shell are 1:1.The top of described cylindrical shell 24 is provided with upgraded coal cooling unit opening for feed 22, described upgraded coal cooling unit opening for feed 22 is communicated with described feed box discharge port 21 and arranges, the top of described cylindrical shell 24 is provided with hot air outlet 25, bottom is provided with inlet of cold air 27 and water vapour relief outlet 28, and bottom is provided with upgraded coal cooling unit discharge port 29.As preferred embodiment, the present embodiment is inner and be positioned at above described cloth tubulation 26 and be provided with material sparger 23 at described cylindrical shell 24, to make material be evenly distributed in cloth tubulation 26 described in each, the freezing air outside described cloth tubulation 26 is utilized indirectly to cool the material being positioned at described cloth tubulation 26.
Described humidification discharging unit is communicated with the bottom of described cylindrical shell 24 and arranges, and described humidification discharging unit opening for feed 30 docks with described upgraded coal cooling unit discharge port 29.Described humidification discharging unit comprises worm conveyor 32 and spray thrower 31, described spray thrower 31 is positioned at the top of described worm conveyor 32 to carry out the process of spray humidification to the convey materials of described worm conveyor 32, upgraded coal finished product after humidification is discharged by the discharging unit discharge port 33 that is humidified, and the water vapour produced in humidification process and dust are discharged from the water vapour relief outlet 28 of described upgraded coal cooling unit.
As preferred embodiment, in the present embodiment, be connected with described upgraded coal cooling unit and weight induction device is set, be conducive to the revolution speed of screw realizing worm conveyor 32 described in Automated condtrol, namely automatization regulates the discharging speed of described upgraded coal cooling unit, thus make the height of materials in described upgraded coal cooling unit cylindrical shell 24 remain at certain altitude, achieve the material sealing at described upgraded coal cooling unit discharge port 29 place.
Based on the improving quality of coal by pyrolysis integral process of the improving quality of coal by pyrolysis integral system described in the present embodiment, technical process is as follows:
(1) after feed coal enters dry thermal cracking unit by described feeding screw, first drying treatment is carried out in dryer section 7, heat smoke to feed coal by indirect and direct combined heated mode, the water content of feed coal is down to less than 0.5%, while drying is carried out to feed coal, coal dust trickle in feed coal is taken away and is blown into described ash discharge case 2 and carries out unifying to collect by the flue gas directly contacted with feed coal, guarantee that pyrolysis of coal reaction can steady in a long-termly run further, dust is effectively avoided easily to cause equipment pipe to block and the large problem of follow-up oil gas product dedusting workload,
Afterwards, heat smoke is utilized to carry out adverse current indirect heating to moisture-free coal at described conversion zone 14, moisture-free coal is heated to 350 ~ 600 DEG C and carries out pyrolytic reaction, reaction generates tar gas, coal gas and upgraded coal, heating is flowed after upgraded coal enters holding-zone 17 by heat smoke, enter described feed box 20 after held for some time, the tar gas generate pyrolytic reaction and coal gas are derived, and the high temperature upgraded coal obtained is discharged through described feed box discharge port 21 and entered upgraded coal cooling unit;
(2) after high temperature upgraded coal enters upgraded coal cooling unit, described material sparger 23 is adopted upgraded coal to be assigned in each cloth tubulation 26, the freezing air outside described cloth tubulation 26 and upgraded coal is utilized to carry out indirect heat exchange, cool within 200 DEG C to upgraded coal, upgraded coal after cooling is discharged from described upgraded coal cooling unit discharge port 29, and the warm air obtained after heat exchange separately uses it for anything else after carrying out heat recuperation;
(3) cooled upgraded coal enters humidification discharging unit, in the process of discharging, utilize spray thrower 31 pairs of upgraded coal to carry out work of water sprinkling for better material moisture, upgraded coal is lowered the temperature further simultaneously, when this upgraded coal is discharged from described humidification discharging unit discharge port 33, be and have certain water content and temperature is the upgraded coal finished product of about 70 DEG C, the water vapour produced in humidification process and dust are discharged from the water vapour relief outlet 28 of described upgraded coal cooling unit.
Obviously, above-described embodiment is only for clearly demonstrating example, and the restriction not to embodiment.For one skilled in the art, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still in the protection domain that the utility model creates.
Claims (10)
1. an improving quality of coal by pyrolysis integration integrated system, is characterized in that, is connected with dry thermal cracking unit, upgraded coal cooling unit and humidification discharging unit at least successively along operational path;
Described dry thermal cracking unit, comprises the rotating cylinder of arranged transversely and is sheathed on the external jacket of described rotating cylinder side-wall outer side, forming exhaust gases passes between described rotating cylinder and described external jacket; The front end of described rotating cylinder is provided with opening for feed, and the rear end of described rotating cylinder is provided with discharge port;
Dryer section, conversion zone and holding-zone is comprised successively along rotating cylinder described in operational path direction, Liao Feng district is provided with in described dryer section and conversion zone boundary, described Liao Feng district is provided with center inner core and is located on the spiral outside the inner core of described center, described center inner core and described rotating cylinder are coaxial setting, and vertically the tip height of described center inner core is lower than the height of materials in described rotating cylinder; Some conversion zone heating tubes are axially arranged with in the inside of described conversion zone and along described rotating cylinder, described conversion zone heating tube along described rotating cylinder inwall even circumferential distribution and the two ends of described conversion zone heating tube are fixed on described rotating cylinder, some holding-zone heating tubes are axially arranged with in the inside of described holding-zone and along described rotating cylinder, described holding-zone heating tube along described rotating cylinder inwall even circumferential distribution and the two ends of described holding-zone heating tube be fixed on described rotating cylinder
Along external jacket described in operational path direction being provided with successively dry flue gas outlet, dry flue gas import, heating exhanst gas outlet, heating gas approach and insulation exhanst gas outlet; Described dry flue gas import and described center inner core are communicated with by a pipe connecting and arrange; The two ends of described conversion zone heating tube are communicated with described heating gas approach with described heating exhanst gas outlet respectively; The two ends of described holding-zone heating tube are communicated with described insulation exhanst gas outlet with described heating gas approach respectively;
Described upgraded coal cooling unit, comprise the cylindrical shell longitudinally arranged and several cloth tubulations vertically be arranged in parallel being positioned at described inner barrel, the top of described cylindrical shell is communicated with the discharge port of described dry thermal cracking unit and arranges, the top of described cylindrical shell is provided with hot air outlet, and bottom is provided with inlet of cold air and water vapour relief outlet;
Described humidification discharging unit, is communicated with the bottom of described cylindrical shell and arranges, and described humidification discharging unit comprises worm conveyor and spray thrower, and described spray thrower is positioned at the top of described worm conveyor to carry out spray process to the convey materials of described worm conveyor.
2. improving quality of coal by pyrolysis according to claim 1 integration integrated system, is characterized in that, at described heating gas approach place, the inner side that is positioned at described external jacket arranges two flue gas shunting devices, and described flue gas shunting device is herring-bone spreader plate.
3. improving quality of coal by pyrolysis integration integrated system according to claim 1 and 2, it is characterized in that, be communicated with the opening for feed of described rotating cylinder and arrange feeder, described feeder is elephant trunk or feeding screw.
4. improving quality of coal by pyrolysis integration integrated system according to claim 3, it is characterized in that, be communicated with the front end of described rotating cylinder and be provided with ash discharge case, the bottom of described ash discharge case is provided with ash discharging hole, and the sidewall of described ash discharge case is provided with pneumatic outlet;
Be communicated with the rear end of described rotating cylinder and be provided with feed box, the bottom of described feed box is provided with discharge port, and the top of described feed box is provided with air guide port.
5. the improving quality of coal by pyrolysis integration integrated system according to claim 1 or 2 or 4, it is characterized in that, along described rotating cylinder central shaft to, the per-cent that the length of described dryer section, conversion zone and holding-zone accounts for rotating cylinder overall length is followed successively by 40% ~ 45%, 40% ~ 45%, 10% ~ 20%.
6. improving quality of coal by pyrolysis integration integrated system according to claim 5, it is characterized in that, along described rotating cylinder central shaft to, the length of described conversion zone heating tube is less than or equal to described conversion zone length, and the length of described holding-zone heating tube is less than or equal to the length of described holding-zone.
7. the improving quality of coal by pyrolysis integration integrated system according to claim 1 or 2 or 4 or 6, it is characterized in that, vertically, the height of materials in described rotating cylinder exceeds 100 ~ 200mm than the bottom of described center inner core.
8. improving quality of coal by pyrolysis according to claim 7 integration integrated system, is characterized in that, is positioned at above described cloth tubulation is provided with material sparger in described inner barrel.
9. the improving quality of coal by pyrolysis integration integrated system according to claim 1 or 2 or 4 or 6 or 8, it is characterized in that, the diameter of described cloth tubulation is DN200 ~ DN400, and the length of described cloth tubulation and the length ratio of described cylindrical shell are 0.8:1 ~ 1:1.
10. improving quality of coal by pyrolysis integration integrated system according to claim 9, is characterized in that, be also connected arrange weight induction device or material level induction installation with described upgraded coal cooling unit.
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| CN201520376981.XU CN204779479U (en) | 2015-06-03 | 2015-06-03 | Matter integration integrated system is carried in pyrolysis of coal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877695A (en) * | 2015-06-03 | 2015-09-02 | 陕西煤业化工集团神木天元化工有限公司 | Integrated system for pyrolysis and upgrading of coal |
| CN105885903A (en) * | 2016-03-31 | 2016-08-24 | 陕西煤业化工集团神木天元化工有限公司 | Method for passivating and cooling anthracite and integrated device thereof |
-
2015
- 2015-06-03 CN CN201520376981.XU patent/CN204779479U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877695A (en) * | 2015-06-03 | 2015-09-02 | 陕西煤业化工集团神木天元化工有限公司 | Integrated system for pyrolysis and upgrading of coal |
| CN104877695B (en) * | 2015-06-03 | 2017-04-12 | 陕西煤业化工集团神木天元化工有限公司 | Integrated system for pyrolysis and upgrading of coal |
| CN105885903A (en) * | 2016-03-31 | 2016-08-24 | 陕西煤业化工集团神木天元化工有限公司 | Method for passivating and cooling anthracite and integrated device thereof |
| CN105885903B (en) * | 2016-03-31 | 2019-01-08 | 陕西煤业化工集团神木天元化工有限公司 | A kind of cooling anthracitic method of passivation and its integrated apparatus |
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