CN103173238B - Thermal pyrolysis method for Fischer-Tropsch synthesis reaction wax residue - Google Patents
Thermal pyrolysis method for Fischer-Tropsch synthesis reaction wax residue Download PDFInfo
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- CN103173238B CN103173238B CN201310092300.2A CN201310092300A CN103173238B CN 103173238 B CN103173238 B CN 103173238B CN 201310092300 A CN201310092300 A CN 201310092300A CN 103173238 B CN103173238 B CN 103173238B
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Abstract
The invention discloses a thermal pyrolysis method for Fischer-Tropsch synthesis reaction wax residue. The thermal pyrolysis method comprises the following steps of: (1), conveying the Fischer-Tropsch synthesis reaction wax residue to a horizontal rotary kiln for carrying out thermal pyrolysis to obtain pyrolysis oil gas and residue; (2), de-dusting and cooling the pyrolysis oil gas in sequence and enabling the de-dusted and cooled pyrolysis oil gas to enter a gas-liquid separator for carrying out gas-liquid separation to obtain non-condensable gas and liquid oil; (3), conveying the non-condensable gas to a heating furnace for carrying out combustion, wherein smoke gas generated by the combustion is used for transferring heat for the horizontal rotary kiln; (4), returning the residue to a charging port of the horizontal rotary kiln, enabling the residue to enter the horizontal rotary kiln and exhausting the residue out of the horizontal rotary kiln through an overflow port of the horizontal rotary kiln. According to the thermal pyrolysis method for Fischer-Tropsch synthesis reaction wax residue disclosed by the invention, heat transfer is directly carried out onto the high-temperature residue and the wax residue material through a back-mixing process, so that the pyrolysis efficiency can be greatly improved, and therefore, the wax residue reaches the pyrolysis temperature within a short time, the recovery rate of the effective components of the wax residue is as high as 85%, the waste is recycled, and the environment-friendly treatment requirements are satisfied.
Description
Technical field
The present invention relates to a kind of thermal-cracking method of Fischer-Tropsch synthesis petroleum tailings.
Background technology
In coal-based indirect liquefaction process, in order to the reactive behavior of maintenance costs fischer-tropsch catalyst, the eliminating regularly carrying out spent catalyst is changed, simultaneously in the treating process of synthetic fluid product pyroparaffine, the flocculating aids adopted can form filter cake, the waste petroleum tailings solid that these two processes produce contains the wax product of 30 ~ 50%, and all the other components are spent catalyst, carclazyte, diatomite, and recycling its wax component is the sport technique segment being badly in need of at present solving.Burn slop wax slag mainly through boiler at present and reduce environmental pollution, process cost is high, also can cause certain influence to the work-ing life of boiler.
Summary of the invention
The object of this invention is to provide a kind of thermal-cracking method of Fischer-Tropsch synthesis petroleum tailings, thus the object reclaiming oil product can be realized.
The thermal-cracking method of a kind of Fischer-Tropsch synthesis petroleum tailings provided by the present invention, comprises the steps:
(1) Fischer-Tropsch synthesis petroleum tailings is delivered in horizontal revolving kiln carries out thermo-cracking, obtain cracking oil gas and residue;
(2) described cracking oil gas enters gas-liquid separator and carries out gas-liquid separation successively after dedusting and cooling, obtains non-condensable gas and liquid oil;
(3) described non-condensable gas inputs in process furnace and burns, and the flue gas that described burning produces conducts heat to described horizontal revolving kiln;
(4) described residue is back to the feed inlet end of described horizontal revolving kiln, then enters described horizontal revolving kiln respectively and discharges described horizontal revolving kiln by the overflow port of described horizontal revolving kiln.
In above-mentioned thermal-cracking method, in step (1), the temperature of described thermo-cracking can be 400 ~ 520 DEG C, and the time can be 30 ~ 60min, as processed 45min under the condition of 450 DEG C.
In above-mentioned thermal-cracking method, in step (1), described Fischer-Tropsch synthesis petroleum tailings can be delivered to feed bin through chapelet, is then delivered in described horizontal revolving kiln through feed auger.
In above-mentioned thermal-cracking method, described horizontal revolving kiln comprises inner core and is sheathed on the urceolus outside described inner core, and the inwall of described urceolus is provided with material delivering plate;
Described Fischer-Tropsch synthesis petroleum tailings carries out described heat scission reaction in described inner core;
Described residue is back to the feed inlet end of described horizontal revolving kiln by described urceolus, oppositely promotes described residue move to described feed inlet end particular by described material delivering plate.
In above-mentioned thermal-cracking method, in step (3), described flue gas carries out cooling dedusting to being delivered to spray column after described horizontal revolving kiln heat transfer, then discharges.
In above-mentioned thermal-cracking method, in step (4), described residue discharge after described horizontal revolving kiln with air mixed, then enter to cyclonic separator, to realize the cooling to described residue.
In above-mentioned thermal-cracking method, the air after described cyclonic separator is separated enters to described spray column, carries out cooling dedusting.
In above-mentioned thermal-cracking method, the stir shaft of described feed bin and the arbor of described feed auger can be chain gear, can save space.
In above-mentioned thermal-cracking method, described cracking oil gas carries out dedusting through oil gas fly-ash separator, and described oil gas fly-ash separator can be jacket structured, can pass into condensation when flue gas carries out being incubated to prevent oil gas in inner sedimentation in its outside.
The thermal-cracking method tool of Fischer-Tropsch synthesis petroleum tailings provided by the invention has the following advantages:
(1) directly carry out thermal conduction by back-mixing process high-temperature residue and petroleum tailings raw material, can improve to greatest extent and split lysis efficiency, make petroleum tailings reach cracking temperature within a short period of time;
(2) level of automation is high, serialization charging, serialization deslagging, can maintain cracking process and uninterruptedly carry out;
(3) cracking apparatus is horizontal revolving kiln, is heated evenly, and cylindrical shell is with spirane structure, not easily coking;
(4) the non-condensable gas reuse of cracking generation, reaches energy-saving and cost-reducing object;
(5) the petroleum tailings effective constituent rate of recovery is up to 85%, utilization of waste material, meets the requirement of environmental protection treatment.
Accompanying drawing explanation
Fig. 1 is the schema of petroleum tailings thermal-cracking method provided by the invention, wherein:
1 chapelet, 2 feed bins, 3 feed auger, 4 horizontal revolving kilns, 5 oil gas fly-ash separators, 6 interchanger, 7 oil-gas separators, 8 oil product line pumps, 9 roots blowers, 10 process furnace, 11 spray columns, 12 cyclonic separators, 13 gas blowers, 14 Quench water pumps, 15 induced draft fans.
Embodiment
The experimental technique used in following embodiment if no special instructions, is ordinary method.
Material used in following embodiment, reagent etc., if no special instructions, all can obtain from commercial channels.
As shown in Figure 1, the present invention carries out thermo-cracking recovery according to the flow process shown in Fig. 1 to Fischer-Tropsch synthesis petroleum tailings, Fischer-Tropsch synthesis petroleum tailings to be recycled is broken into 5 ~ 10mm particle, then be fed through in feed bin 2 through chapelet 1, be fed through in the inner core of horizontal revolving kiln 4 by feed auger 3, thermo-cracking 45min at the temperature of 450 DEG C, obtains cracking oil gas and hot-engine sludge.Wherein horizontal revolving kiln 4 comprises inner core and is sheathed on the urceolus outside this inner core, and the inwall of urceolus is provided with material delivering plate; And being provided with stir shaft in feed bin 2, the arbor of this stir shaft and feed auger 3 is chain gear, can effectively reduce to take up an area space.
The cracking oil gas wherein obtained is introduced in oil gas fly-ash separator 5 and carries out dedusting, and this oil gas fly-ash separator 5 is jacket structured, can prevent the condensation of cracking oil gas.Cracking oil gas after dedusting is cooled to less than 60 DEG C through interchanger 6 again, and the cracking oil gas through cooling enters in oil-gas separator 7 and carries out gas-liquid separation.
Gas after gas-liquid separation pressurizes through roots blower 9 and sends in process furnace 10 as fuel combustion, the heat smoke produced enters the urceolus of horizontal revolving kiln 4, to carry out indirect heat transfer to inner core, with the requirement making the temperature of inner core meet pyrolysis temperature, cooling dedusting is carried out to the flue gas feeding spray column 11 that horizontal revolving kiln 4 conducts heat complete, then enters chimney through induced draft fan 15.Chilled water in spray process uses with Quench water pump 14 pressurization cycle after sedimentation.
The liquid oil (wherein gasoline component 80%, diesel component 20%) obtained through gas-liquid separation sends into the processing of oil product storage tank products for further through oil product line pump 8, and the efficient recovery rate of liquid oil of the present invention reaches 66.2%.
The hot-engine sludge wherein obtained enters in urceolus by the inner core afterbody of horizontal revolving kiln 4, and move to feed inlet end along with the rotation of horizontal revolving kiln 4 and the pushing effect of material delivering plate, then a part of hot-engine sludge enters inner core through material guiding device, mixes reach more than 400 DEG C with the Fischer-Tropsch synthesis petroleum tailings raw material in inner core; Residue hot-engine sludge overflows urceolus from overflow port discharges horizontal revolving kiln 4, be mixed into cyclonic separator 12 with freezing air and be cooled to less than 200 DEG C, residue (main component is spent catalyst, carclazyte, diatomite) after cooling enters slag bath, and the air after heat exchange enters spray column 11 and lowers the temperature after dedusting and enter chimney.For ensureing the adjustment of furnace temp, configuration gas blower 13 supplements secondary air, simultaneously for residue cooling provides freezing air.
Can learn the wax component in efficient recovery of the present invention Fischer-Tropsch synthesis petroleum tailings by above-described embodiment, the residue wherein after cracking can meet environmental protection treatment requirement, can direct landfill; The liquid oil obtained can obtain petrol and diesel oil by deep processing; Non-condensable gas reclaims burning, obtains the object of saving energy and reduce the cost, and flue gas reduces environmental pollution through processes such as cooling dedustings.
Below describe embodiment of the present invention in detail, a lot of improvement can be done for a person skilled in the art obviously and change and essence spirit of the present invention can not be deviated from.All these changes and improvements are all within protection scope of the present invention.
The experimental result of above-described embodiment is as shown in table 1.
Result in table 1 embodiment 1
Claims (1)
1. a thermal-cracking method for Fischer-Tropsch synthesis petroleum tailings, comprises the steps:
(1) Fischer-Tropsch synthesis petroleum tailings is delivered in horizontal revolving kiln carries out thermo-cracking, obtain cracking oil gas and residue; The temperature of described thermo-cracking is 400 ~ 520 DEG C, and the time is 30 ~ 60min; Wherein horizontal revolving kiln comprises inner core and is sheathed on the urceolus outside this inner core, and the inwall of urceolus is provided with material delivering plate; And being provided with stir shaft in feed bin, the arbor of this stir shaft and feed auger is chain gear, can effectively reduce to take up an area space;
(2) the cracking oil gas wherein obtained is introduced in oil gas fly-ash separator and carries out dedusting, and this oil gas fly-ash separator is jacket structured, can prevent the condensation of cracking oil gas; Cracking oil gas after dedusting is cooled to less than 60 DEG C through interchanger again, and the cracking oil gas through cooling enters in oil-gas separator and carries out gas-liquid separation;
(3) gas after gas-liquid separation is sent in process furnace as fuel combustion through roots blower pressurization, the heat smoke produced enters the urceolus of horizontal revolving kiln, to carry out indirect heat transfer to inner core, with the requirement making the temperature of inner core meet pyrolysis temperature, cooling dedusting is carried out to the flue gas feeding spray column that horizontal revolving kiln conducts heat complete, then enters chimney through induced draft fan; Chilled water in spray process uses with Quench water pump pressurization cycle after sedimentation; The liquid oil obtained through gas-liquid separation sends into the processing of oil product storage tank products for further through oil product line pump;
(4) hot-engine sludge enters in urceolus by the inner core afterbody of horizontal revolving kiln, and move to feed inlet end along with the rotation of horizontal revolving kiln and the pushing effect of material delivering plate, then a part of hot-engine sludge enters inner core through material guiding device, mixes reach more than 400 DEG C with the Fischer-Tropsch synthesis petroleum tailings raw material in inner core; Residue hot-engine sludge overflows urceolus from overflow port discharges horizontal revolving kiln, and be mixed into cyclonic separator with freezing air and be cooled to less than 200 DEG C, the residue after cooling enters slag bath, and the air after heat exchange enters chimney after entering spray column cooling dedusting; For ensureing the adjustment of furnace temp, configuration gas blower supplements secondary air, simultaneously for residue cooling provides freezing air.
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| CN201310092300.2A CN103173238B (en) | 2013-03-21 | 2013-03-21 | Thermal pyrolysis method for Fischer-Tropsch synthesis reaction wax residue |
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| CN201310092300.2A CN103173238B (en) | 2013-03-21 | 2013-03-21 | Thermal pyrolysis method for Fischer-Tropsch synthesis reaction wax residue |
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| CN103173238B true CN103173238B (en) | 2015-03-11 |
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| CN105542854A (en) * | 2016-03-12 | 2016-05-04 | 北京纬纶华业环保科技股份有限公司 | Device and method for recovering paraffin from Fischer-Tropsch paraffin residues |
| CN106675590B (en) * | 2017-01-04 | 2019-07-30 | 中科合成油工程股份有限公司 | A kind of thermal cracker and its application method of Fischer-Tropsch synthesis petroleum tailings |
| CN110252765A (en) * | 2019-06-05 | 2019-09-20 | 刘刚 | A kind of Fischer Tropsch waxes Slag treatment method and processing system |
| CN113980693A (en) * | 2020-07-27 | 2022-01-28 | 山西潞安煤基清洁能源有限责任公司 | Treatment method of Fischer-Tropsch synthesis slag wax |
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| CN1074447C (en) * | 1999-06-08 | 2001-11-07 | 周鼎力 | Process and equipment for producing gasoline and diesel oil with waste plastics and/or heavy oil |
| CN1328308C (en) * | 2005-08-02 | 2007-07-25 | 姜皓 | Industralized waste-plastic oiling apparatus |
| RU2289607C1 (en) * | 2005-11-24 | 2006-12-20 | Сергей Витальевич Демьянов | Method and the installation (versions) for reprocessing of the petroleum tailings |
| CN101812314B (en) * | 2009-02-20 | 2013-06-19 | 上海金匙环保科技股份有限公司 | Low-temperature catalytic cracking method with high-value utilization of waste tire |
| CN102241998B (en) * | 2011-03-17 | 2013-09-18 | 东营市君威节能环保有限公司 | Treatment equipment and process of oily sludge and sand |
| CN202509035U (en) * | 2012-04-22 | 2012-10-31 | 江苏鹏飞集团股份有限公司 | Device for splitting wax residue |
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Address after: 101407 No.1, south 2nd Yueyuan street, C District, Yanqi Development Zone, Huairou District, Beijing Patentee after: Zhongke synthetic oil Technology Co.,Ltd. Address before: 101407 No.1, south 2nd Yueyuan street, C District, Yanqi Development Zone, Huairou District, Beijing Patentee before: SYNFUELS CHINA TECHNOLOGY Co.,Ltd. |
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