CN103509602A - Raw material coal conveying method and system for gasification furnace - Google Patents
Raw material coal conveying method and system for gasification furnace Download PDFInfo
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- CN103509602A CN103509602A CN201310437153.8A CN201310437153A CN103509602A CN 103509602 A CN103509602 A CN 103509602A CN 201310437153 A CN201310437153 A CN 201310437153A CN 103509602 A CN103509602 A CN 103509602A
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Abstract
The invention discloses a raw material coal conveying method and system for a gasification furnace. The raw material coal conveying method for the gasification furnace comprises the following steps: drying raw material coal and then mixing the raw material coal with light oil according to a predefined proportion to obtain coal-oil slurry; compressing and conveying the coal-oil slurry to the gasification furnace. According to the raw material coal conveying method for the gasification furnace, which is provided by the embodiment of the invention, the pressure in the gasification furnace can be increased, and energy consumption is reduced.
Description
Technical field
The present invention relates to Coal Gasification Technology field, particularly, the present invention relates to a kind of feed coal delivery system of feed coal carrying method and vapourizing furnace of vapourizing furnace.
Background technology
In correlation technique, the feed coal of vapourizing furnace is transported in vapourizing furnace with the form of coal water slurry or coal dust conventionally, and these two kinds of carrying methods exist respectively that energy consumption is high, gasification efficiency is low, vapor pressure is difficult to raising, operating safety and the lower problem of stability.
Therefore, the feed coal of existing vapourizing furnace is carried urgently and is improved.
Summary of the invention
The present invention is intended to solve at least to a certain extent one of technical problem in correlation technique.For this reason, one object of the present invention is to propose a kind ofly can to improve vapourizing furnace gasification efficiency, reduces energy consumption, lightweight oil is from the horse's mouth and without the feed coal carrying method of running cost expense.
According to an aspect of the present invention, the present invention proposes the feed coal carrying method of vapourizing furnace, comprise the following steps: after feed coal is dry, mix by predetermined proportion with lightweight oil, obtain coal oil mixture; Described coal oil mixture is pressed and delivered to vapourizing furnace.
According to the feed coal carrying method of the vapourizing furnace of the embodiment of the present invention, transfer pressure can improve and Energy Intensity Reduction.
In some embodiments of the invention, described feed coal is at least one in hard coal, bituminous coal, brown coal and coal slime.
In some embodiments of the invention, the major ingredient of described lightweight oil is at least one in coal tar, benzene,toluene,xylene.
In some embodiments of the invention, the solids concn of described coal oil mixture is 30-70 % by weight.
In some embodiments of the invention, described coal oil mixture is pressed and delivered to described vapourizing furnace by coal oil mixture pump.
In some embodiments of the invention, described feed coal carries out drying treatment by pipe drier.
In some embodiments of the invention, the feed coal carrying method of described vapourizing furnace also comprises and will after described coal oil mixture stirring, be pressed and delivered to described vapourizing furnace.
In some embodiments of the invention, the feed coal carrying method of described vapourizing furnace also comprises the lightweight oil the lightweight oil of discharging together in vapourizing furnace is separated with gas product and recycle separation.
According to another aspect of the present invention, the present invention proposes a kind of feed coal delivery system of vapourizing furnace, comprising: for storing the feed coal bin of feed coal; Drying machine, described drying machine is connected with described feed coal bin, for the dry feed coal that comes from described feed coal bin; For storing the lightweight oil hold tank of lightweight oil; Oil coal mixing tank, described oily coal mixing tank is connected with lightweight oil hold tank with described drying machine, for predetermined proportion, mix come from described drying machine feed coal with the lightweight oil that comes from described lightweight oil hold tank to obtain coal oil mixture; With coal oil mixture pump, described coal oil mixture pump is connected with described oily coal mixing tank, for coming from the mixed coal oil mixture of described oily coal mixing tank, is pressed and delivered to vapourizing furnace.
Stable according to the feed coal delivery system of the vapourizing furnace of the embodiment of the present invention, transfer pressure improves and Energy Intensity Reduction.
In some embodiments of the invention, the feed coal delivery system of described vapourizing furnace also comprises coal oil mixture basin, and described coal oil mixture basin is connected between described oily coal mixing tank and described coal oil mixture pump.
In some embodiments of the invention, the feed coal delivery system of described vapourizing furnace also comprises: the dry coal bin that is connected to store dried feed coal with described drying machine; Be connected to the first Gravimetric Coal Feeders between described feed coal bin and described drying machine; Be connected to the second Gravimetric Coal Feeders between described dry coal bin and described oily coal mixing tank.
In some embodiments of the invention, the feed coal delivery system of described vapourizing furnace also comprises: fine coal deep bed filter, the import of described fine coal deep bed filter is connected with the smoke outlet of described drying machine, and the dust mouth of described fine coal deep bed filter is connected with described dry coal bin; And exhaust fan, described exhaust fan is connected with the air outlet of described fine coal deep bed filter.
In some embodiments of the invention, described in the feed coal delivery system of described vapourizing furnace, drying machine is the pipe drier that utilizes steam to be thermal source.
Accompanying drawing explanation
Fig. 1 is the schema of the feed coal carrying method of vapourizing furnace according to an embodiment of the invention.
Fig. 2 is the schematic diagram of the feed coal delivery system of vapourizing furnace in accordance with another embodiment of the present invention.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center ", " longitudinally ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", " counterclockwise ", " axially ", " radially ", orientation or the position relationship of indications such as " circumferentially " are based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " be only for describing object, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or be integral; Can be mechanical connection, can be to be also electrically connected to; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals or the interaction relationship of two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned term concrete meaning in the present invention.
In the present invention, unless otherwise clearly defined and limited, First Characteristic Second Characteristic " on " or D score can be that the first and second features directly contact, or the first and second features are by intermediary indirect contact.And, First Characteristic Second Characteristic " on ", " top " and " above " but First Characteristic directly over Second Characteristic or oblique upper, or only represent that First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " can be First Characteristic under Second Characteristic or tiltedly, or only represent that First Characteristic level height is less than Second Characteristic.
Below with reference to accompanying drawing, describe according to the feed coal carrying method of the vapourizing furnace of the embodiment of the present invention.
According to the feed coal carrying method of the vapourizing furnace of the embodiment of the present invention, comprise the following steps: after feed coal is dry, mix by predetermined proportion with lightweight oil, obtain coal oil mixture; Coal oil mixture is pressed and delivered to vapourizing furnace.
For example, the feed coal carrying method of the vapourizing furnace in correlation technique is carried mainly with the form of coal water slurry or coal dust, and transfer pressure is generally 40 kilograms.
According to embodiments of the invention, by feed coal is mixed with the form of coal oil mixture and is carried with lightweight oil, transfer pressure can reach 65-85 kilogram, utilize thus according to the feed coal carrying method of the vapourizing furnace of the embodiment of the present invention feed coal is carried through force (forcing) pump with the form of coal oil mixture, can significantly improve transfer pressure, improve thus the pressure in vapourizing furnace, and reduce energy consumption.
The concrete steps of the feed coal carrying method of the vapourizing furnace of a concrete example according to the present invention are described below with reference to Fig. 1:
S100: feed coal is dried
Particularly, first feed coal to be conveyed is dried.For example, feed coal can carry out drying treatment by pipe drier.Pipe drier can be take steam as thermal source, and pipe drier inside can arrange multistage pipeline, and the vapour stream of tube side and the feed coal of shell side carry out heat exchange, and then effectively feed coal are dried.Adopt drying machine to carry out drying treatment to feed coal, be convenient to the carrying out of subsequent process steps.
Be understandable that, feed coal can be any feed coal for the preparation of reducing gas, and for example feed coal can be one or more the mixture in hard coal, bituminous coal, brown coal and coal slime.
S200: dry feed coal is mixed with lightweight oil, obtain coal oil mixture
Feed coal mixes with lightweight oil after drying treatment, to obtain coal oil mixture.The component of lightweight oil is also not particularly limited, and according to concrete example of the present invention, preferably, lightweight main body of oil can be at least one in coal tar, benzene,toluene,xylene.Such lightweight oil is from the horse's mouth, and can significantly improve transfer pressure, and reduces energy consumption.
In certain embodiments, the solids concn of the coal oil mixture that feed coal and lightweight oil are mixed to get is also not particularly limited, and the solids concn of preferred oil coal slurry can be 30～70 % by weight.By a large amount of testing datas, it is best in 30～70 % by weight economic benefits that analysis and summary obtain the solids concn of coal oil mixture.The solid weight % concentration of coal oil mixture is too low, and the heat in vapourizing furnace does not reach balance, and vapourizing furnace can not normally move; The solid weight % excessive concentration of coal oil mixture, vapourizing furnace outlet synthetic gas excess Temperature, benzene and toluene etc. are generated unclassified stores by reaction, and the benzene that refrigerated separation reclaims and toluene amount reduce, and need to supplement benzene and toluene in system, increase the working cost of system.The solid weight % excessive concentration of coal oil mixture simultaneously, also has influence on the stability of coal oil mixture pump operation, causes the fluctuation of system feeding amount large, affects the steady running of whole system.
S300: coal oil mixture is transported to vapourizing furnace
The above-mentioned coal oil mixture being mixed to get is transported in vapourizing furnace.According to a particular embodiment of the invention, mode of movement is also not particularly limited, and preferably can adopt coal oil mixture pump by pressurization, coal oil mixture to be transported in vapourizing furnace.Adopt thus pressuring method to carry, to can further improve coal oil mixture transport efficiency.According to another embodiment of the invention, the feed coal carrying method of above-mentioned vapourizing furnace carries out stir process to coal oil mixture before can also being included in coal oil mixture being pressed and delivered to vapourizing furnace.Can, so that feed coal evenly mixes with lightweight oil, be convenient to carry thus.
In certain embodiments, coal oil mixture is transported to after vapourizing furnace, gasification reaction is participated in feed coal burning, and lightweight oil is together discharged vapourizing furnace with reducing gas.In order further effectively to utilize lightweight oil, the vapourizing furnace feed coal carrying method of the embodiment of the present invention can further include the lightweight oil of discharging together in vapourizing furnace is carried out separated with gas product, and separation is obtained to lightweight oil be again mixed with coal oil mixture with feed coal, realize thus the cycling and reutilization of lightweight oil, reduce running cost.
According to another aspect of the present invention, the present invention proposes the feed coal delivery system of vapourizing furnace, below with reference to Fig. 2, describe the concrete structure of the feed coal delivery system of a concrete example of the present invention.
According to the feed coal delivery system of the vapourizing furnace of the embodiment of the present invention, comprise: feed coal bin 10, drying machine 20, lightweight oil hold tank 30, oily coal mixing tank 40 and coal oil mixture pump 50.Wherein, drying machine 20 is connected with storage storehouse 10, and oily coal mixing tank 40 is connected with lightweight oil hold tank 30 with drying machine 20, and coal oil mixture pump 50 is connected with oily coal mixing tank 40.
In certain embodiments, storage storehouse 10 is for storing feed coal; Drying machine 20 is for being dried from the feed coal with feed coal bin 10; Lightweight oil hold tank 30 is for storing lightweight oil; Oil coal mixing tank 40 is for mixing with predetermined proportion from the feed coal of drying machine 20 and the lightweight oil that comes from lightweight oil hold tank 30 to obtain coal oil mixture; Coal oil mixture pump 50 will be for being pressed and delivered to vapourizing furnace from the mixed coal oil mixture of oily coal mixing tank 40.
Utilize the feed coal delivery system of the vapourizing furnace of the embodiment of the present invention can be by feed coal with the form of coal oil mixture and be delivered in vapourizing furnace, can solve thus that prior art energy consumption is high, gasification efficiency is low, transfer pressure is difficult to raising, operating safety and the problem such as stability is lower.
In certain embodiments, as shown in Figure 2, the feed coal delivery system of above-mentioned vapourizing furnace can also comprise coal oil mixture basin 60, and coal oil mixture basin 60 is connected between oily coal mixing tank 40 and coal oil mixture pump 50.This coal oil mixture basin can be for storage feed coal and the mixed coal oil mixture of lightweight oil, to supplied with vapourizing furnace, thus stability and the continuity of assurance system.According to a particular embodiment of the invention, coal oil mixture basin 60 can also have whipping appts 61, can prevent thus coal oil mixture liquid-solid separation in storage process, can be convenient to thus carry, and improves transport efficiency.
In certain embodiments, the feed coal delivery system of vapourizing furnace can further include dry coal bin 70, the first Gravimetric Coal Feeders 80 and the second Gravimetric Coal Feeders 90, and dry coal bin 70 is connected with drying machine 20 and for storing dried feed coal; The first weigher 80 is connected between feed coal bin 10 and drying machine 20; The second Gravimetric Coal Feeders 90 is connected between dry coal bin 70 and oily coal mixing tank 40.Feed coal can be mixed according to predetermined proportion with lightweight oil thus, to improve vapourizing furnace gasification efficiency and transfer pressure.
In certain embodiments, the feed coal delivery system of vapourizing furnace can also comprise fine coal deep bed filter 100 and exhaust fan 110, the import 101 of fine coal deep bed filter 100 is connected with the smoke outlet 21 of drying machine 20, and fine coal deep bed filter 100 dust mouth 102 is connected with dry coal bin 70; Exhaust fan 110 is connected with fine coal deep bed filter 100 air outlet 103.The feed coal of carrying secretly flue gas from pipe drier 20 interior discharges can be carried out to filtered and recycled thus, so that waste and the environmental pollution that can avoid feed coal to be discharged into causing in the external world.
In certain embodiments, the particular type of drying machine 20 is also not particularly limited, and according to a particular embodiment of the invention, drying machine 20 can be preferably the pipe drier that utilizes steam a to be thermal source.On pipe drier, be provided with multistage pipeline, the vapour stream of tube side and the feed coal of shell side carry out heat exchange, and then effectively feed coal are dried, exhaust vapour phlegma b.Adopt drying machine to carry out drying treatment to feed coal, can significantly reduce following process energy consumption, and improve vapourizing furnace gasification efficiency and transfer pressure.
In certain embodiments, as shown in Figure 2, coal oil mixture pump 50 is connected with vapourizing furnace A, thus by coal oil mixture by being pressed and delivered in vapourizing furnace.Vapourizing furnace A is connected with lightweight oil hold tank 30 simultaneously.According to a particular embodiment of the invention, the lightweight oil in coal oil mixture is discharged with product in vapourizing furnace, by coal oil mixture being carried out again carry out mixed cycle utilization with feed coal after separation, realizes thus lightweight oil thing operation cost.
In the description of this specification sheets, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present invention or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, to the schematic statement of above-mentioned term not must for be identical embodiment or example.And, the specific features of description, structure, material or feature can one or more embodiment in office or example in suitable mode combination.In addition, those skilled in the art can carry out combination and combination by the different embodiment that describe in this specification sheets or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, and those of ordinary skill in the art can change above-described embodiment within the scope of the invention, modification, replacement and modification.
Claims (13)
1. a feed coal carrying method for vapourizing furnace, is characterized in that, comprises the following steps:
After feed coal is dry, mix by predetermined proportion with lightweight oil, obtain coal oil mixture;
Described coal oil mixture is pressed and delivered to vapourizing furnace.
2. the feed coal carrying method of vapourizing furnace according to claim 1, is characterized in that, described feed coal is at least one in hard coal, bituminous coal, brown coal and coal slime.
3. the feed coal carrying method of vapourizing furnace according to claim 1 and 2, is characterized in that, the major ingredient of described lightweight oil is at least one in coal tar, benzene,toluene,xylene.
4. according to the feed coal carrying method of the vapourizing furnace described in any one in claim 1-3, it is characterized in that, the solids concn of described coal oil mixture is 30-70 % by weight.
5. according to the feed coal carrying method of the vapourizing furnace described in any one in claim 1-4, it is characterized in that, described coal oil mixture is pressed and delivered to described vapourizing furnace by coal oil mixture pump.
6. according to the feed coal carrying method of the vapourizing furnace described in any one in claim 1-5, it is characterized in that, described feed coal carries out drying treatment by pipe drier.
7. according to the feed coal carrying method of the vapourizing furnace described in any one in claim 1-6, it is characterized in that, also comprise and will after described coal oil mixture stirring, be pressed and delivered to described vapourizing furnace.
8. according to the feed coal carrying method of the vapourizing furnace described in any one in claim 1-7, it is characterized in that, also comprise the lightweight oil the lightweight oil of discharging together is separated with gas product and recycle separation in vapourizing furnace.
9. a feed coal delivery system for vapourizing furnace, is characterized in that, comprising:
For storing the feed coal bin of feed coal;
Drying machine, described drying machine is connected with described feed coal bin, for the dry feed coal that comes from described feed coal bin;
For storing the lightweight oil hold tank of lightweight oil;
Oil coal mixing tank, described oily coal mixing tank is connected with lightweight oil hold tank with described drying machine, for predetermined proportion, mix come from described drying machine feed coal with the lightweight oil that comes from described lightweight oil hold tank to obtain coal oil mixture; With
Coal oil mixture pump, described coal oil mixture pump is connected with described oily coal mixing tank, for coming from the mixed coal oil mixture of described oily coal mixing tank, is pressed and delivered to vapourizing furnace.
10. the feed coal delivery system of vapourizing furnace according to claim 9, is characterized in that, also comprises coal oil mixture basin, and described coal oil mixture basin is connected between described oily coal mixing tank and described coal oil mixture pump.
11. according to the feed coal delivery system of the vapourizing furnace described in claim 9 or 10, it is characterized in that, also comprises:
Be connected to store the dry coal bin of dried feed coal with described drying machine;
Be connected to the first Gravimetric Coal Feeders between described feed coal bin and described drying machine;
Be connected to the second Gravimetric Coal Feeders between described dry coal bin and described oily coal mixing tank.
The feed coal delivery system of 12. vapourizing furnaces according to claim 11, is characterized in that, also comprises:
Fine coal deep bed filter, the import of described fine coal deep bed filter is connected with the smoke outlet of described drying machine, and the dust mouth of described fine coal deep bed filter is connected with described dry coal bin; With
Exhaust fan, described exhaust fan is connected with the air outlet of described fine coal deep bed filter.
13. according to the feed coal delivery system of the vapourizing furnace described in any one in claim 9-12, it is characterized in that, described drying machine is the pipe drier that utilizes steam to be thermal source.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113004955A (en) * | 2021-02-02 | 2021-06-22 | 中国神华煤制油化工有限公司 | Coal slurry preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080004A (en) * | 2009-11-27 | 2011-06-01 | 中国科学院过程工程研究所 | Biological oil-coal slurry and method for preparing gas from same |
| CN103242907A (en) * | 2013-05-20 | 2013-08-14 | 上海鑫兴化工科技有限公司 | High-pressure multistage fluidized bed reactor |
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2013
- 2013-09-24 CN CN201310437153.8A patent/CN103509602A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102080004A (en) * | 2009-11-27 | 2011-06-01 | 中国科学院过程工程研究所 | Biological oil-coal slurry and method for preparing gas from same |
| CN103242907A (en) * | 2013-05-20 | 2013-08-14 | 上海鑫兴化工科技有限公司 | High-pressure multistage fluidized bed reactor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113004955A (en) * | 2021-02-02 | 2021-06-22 | 中国神华煤制油化工有限公司 | Coal slurry preparation method and application thereof |
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