CN103983097A - Tail gas cyclic utilization system of vibrated fluidized bed dryer for drying ammonium sulfate - Google Patents
Tail gas cyclic utilization system of vibrated fluidized bed dryer for drying ammonium sulfate Download PDFInfo
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- CN103983097A CN103983097A CN201410236298.6A CN201410236298A CN103983097A CN 103983097 A CN103983097 A CN 103983097A CN 201410236298 A CN201410236298 A CN 201410236298A CN 103983097 A CN103983097 A CN 103983097A
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- bed dryer
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- heat pipe
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
A tail gas cyclic utilization system of a vibrated fluidized bed dryer for drying ammonium sulfate comprises the vibrated fluidized bed dryer, three cyclone separators, two heat pipe exchangers and an induced draft fan. Smoke output pipelines are respectively arranged at a first section, a second section and a cooling section on the vibrated fluidized bed dryer correspondingly. A group of cyclone separators and the heat pipe exchangers are respectively connected to the positions of the first section and the second section in series. One cyclone separator is arranged at the position of the cooling section, cold air respectively flows through two heat pipe exchangers from top to bottom, and by modifying the tail gas discharging portion of an original system, tail gas at the sections of the vibrated fluidized bed dryer is respectively and independently subjected to collection, dedusting and heat exchange recovery, and the purpose of reducing the energy consumption cost is achieved. In addition, a modification process is simple, the investment is low, and the environmental protection benefit is remarkable.
Description
Technical field
The present invention relates to the technical field of coking tail gas recycle, is a kind of cyclic utilization system that a kind of vibrating fluid bed dryer relating to during to dry ammonium sulfate produces tail gas specifically.
Background technology
Coking coal is in coke oven destructive distillation conversion process, and coking nitrogen content of coal element 60% remains in coke, wherein have 15%-20% at high temperature with hydrogenation symphysis ammonification, all the other are volatile compound and are stored in coal gas and tar as hydrogen cyanide, pyridine etc.Further cooling along with coke-stove gas, the ammonia that a part generates proceeds in condensation ammoniacal liquor, and a part is still present in (generally at 6g/m3-8g/m3) in coke-stove gas in addition.
At present, most coal chemical enterprises adopt traditional saturator to produce ammonium sulfate process, in wet ammonium sulfate finished product (moisture is in 3.0% left and right) dry run (dry after moisture content of finished products below 1.0%), adopt traditional drying mode that the dry wet ammonium sulfate of thermal source is provided with steam or conduction oil.The heat exchanger that uses air-introduced machine that cold air is sent into steam or high temperature heat conductive oil carries out heat exchange, and the hot-air that the temperature obtaining after heat exchange is about 115 DEG C and 135 DEG C is sent into respectively a section and two sections of vibrating fluid bed dryer by air-heater and is dried ammonium sulfate wet feed.Dried hot ammonium sulfate finished product, enter the cooling section of vibrating fluid bed dryer, undertaken cooling by the cold wind of being sent into by air-cooler, be cooled to 40 DEG C of following ammonium sulfate finished products and enter ammonium sulfate hopper, the ammonia sulfate crystal getting off from ammonium sulfate hopper is sent into warehouse for finished product after packing machine automatic weighing, packaging.
The flue-gas temperature of carrying ammonium sulfate dust of one section and two sections discharge of vibrating fluid bed dryer is greatly about 95 DEG C-105 DEG C, this partial tail gas is admitted to after a cyclone separator, after cyclone separator is isolated carried secretly sulphur ammonium dust, delayed heat air is directly disposed in atmosphere.On the one hand, the heat carrying in the hot-air tail gas being finally discharged from is wasted; Produce on the other hand to add steam or the thermal conductance deep fat that hot-air is used, need again to consume a large amount of coal gas, so increased system energy consumption, do not meet the environmental protection of opinion, the theory of economical production.
Summary of the invention
In order to realize the object of energy-conserving and environment-protective, the invention provides a kind of cyclic utilization system of the tail gas with higher latent heat that can fully recycle vibrating fluid bed dryer discharge
The technical scheme that the present invention taked is for achieving the above object: the cyclic utilization system to dry ammonium sulfate with vibrating fluid bed dryer tail gas, involving vibrations fluidized bed dryer, three cyclone separators, two heat exchange of heat pipes, air-introduced machine, heat exchanger, air-heater; On corresponding vibrating fluid bed dryer one section, two sections and cooling section part arrange respectively flue gas output channel;
Be communicated with the entrance of a cyclone separator in one section of flue gas output channel of locating to arrange, and the gas delivery port of this cyclone separator connects the thermal medium entrance of a heat exchange of heat pipe lower end, the thermal medium outlet of this heat exchange of heat pipe upper end connects chimney, cold air is sent into by the gas medium entrance of this heat exchange of heat pipe upper end, the gas medium outlet of this heat exchange of heat pipe lower end is communicated with the gas medium entrance of another described heat exchange of heat pipe upper end, and the gas medium outlet of this another heat exchange of heat pipe lower end is communicated with the entrance of described air-introduced machine;
Be communicated with the entrance of second cyclone separator in two sections of flue gas output channels of locating to arrange, and the gas delivery port of this second cyclone separator connects the thermal medium entrance of another described heat exchange of heat pipe lower end, the thermal medium outlet of this another heat exchange of heat pipe upper end connects chimney;
The flue gas output channel arranging in cooling section place is communicated with the entrance of the 3rd described cyclone separator, and the gas delivery port of the 3rd cyclone separator connects chimney;
Solid delivery outlet on three described cyclone separators is parallel to the recovered material input port of described vibrating fluid bed dryer;
The outlet of described air-introduced machine is communicated with the gas medium entrance of described heat exchanger, and the gas medium outlet of described heat exchanger is communicated with the entrance of described air-heater, and the outlet of described air-heater is communicated with the dry hot gas entrance of described vibrating fluid bed dryer.
Further, on the surface of each described heat exchange of heat pipe, heat-insulation layer is set respectively.
Further, described heat exchange of heat pipe is shell-and-tube heat exchanger or eddy current hotting mask heat exchanger.
The invention has the beneficial effects as follows: it is by transforming original system tail gas dispatch part, by the each vibrating fluid bed dryer section of tail gas of locating collect separately respectively, dedusting, heat exchange reclaim, realize the object that reduces energy consumption cost, and reforming technology is simple, small investment, and environmental benefit is remarkable;
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
In figure: 1 vibrating fluid bed dryer 11 centrifuge 12 crystallization feeder channel 13 saturator 2 cyclone separator one 21 heat exchange of heat pipe one 3 cyclone separator 2 31 heat exchange of heat pipe 24 cyclone separator 35 ammonium sulfate hopper 6 air-introduced machine 7 heat exchanger 8 air-heaters.
Detailed description of the invention
For ease of understanding technical scheme of the present invention, below in conjunction with accompanying drawing, wherein related technology contents is described further.
In the description of this invention, it should be noted that, term " left side ", " right side ", " on ", orientation or the position relationship of the instruction such as D score be based on orientation shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, construct and operation with specific orientation, therefore can not be interpreted as limitation of the present invention.Unless otherwise clearly defined and limited, term " is connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connects integratedly; Can be mechanical connection, can be also electrical connection, can be to be directly connected, also can indirectly be connected by intermediary, and can be the connection of two element internals.For the ordinary skill in the art, can concrete condition understand above-mentioned term concrete meaning in the present invention.In addition; according to actual conditions; in connecting pipe in native system between each parts; must be provided with according to specific needs switch valve and/or flow control valve; because it is that those skilled in the art are known; so in the description of this invention, do not illustrate, but this not will be understood that and can form impact to protection of the present invention and open adequacy.
As shown in Figure 1,
A cyclic utilization system to dry ammonium sulfate with vibrating fluid bed dryer tail gas, involving vibrations fluidized bed dryer 1, cyclone separator 1, cyclone separator 23, cyclone separator 34, heat exchange of heat pipe 1, heat exchange of heat pipe 2 31, ammonium sulfate hopper 5, air-introduced machine 6, heat exchanger 7, air-heater 8.On corresponding described vibrating fluid bed dryer 1 one section, two sections and cooling section part arrange respectively flue gas output channel.The thermal medium of described heat exchanger 7 can be conduction oil or steam.
The flue gas output channel of locating to arrange in 1 one sections of described vibrating fluid bed dryers is communicated with the entrance of cyclone separator 1, and the gas delivery port of described cyclone separator 1 connects the thermal medium entrance of heat exchange of heat pipe one 21 lower ends, the thermal medium outlet of described heat exchange of heat pipe one 21 upper ends connects chimney.Cold air is sent into by the gas medium entrance of heat exchange of heat pipe one 21 upper ends, the gas medium outlet of heat exchange of heat pipe one 21 lower ends is communicated with the gas medium entrance of described heat exchange of heat pipe 2 31 upper ends, and the gas medium outlet of described heat exchange of heat pipe 2 31 lower ends is communicated with the entrance of described air-introduced machine 6.Hence one can see that, and in described two heat exchange of heat pipes 21,31, thermal medium is contrary with the flow direction of cold medium, is conducive to so the abundant heat exchange between cold and hot medium, farthest heat reclaimed, and reduces energy consumption cost.
The flue gas output channel of locating to arrange in 1 two sections of described vibrating fluid bed dryers is communicated with the entrance of cyclone separator 23, and be the thermal medium entrance that the gas delivery port of cyclone separator 23 connects described heat exchange of heat pipe 2 31 lower ends, the thermal medium outlet of described heat exchange of heat pipe 2 31 upper ends connects chimney.
The flue gas output channel arranging in described vibrating fluid bed dryer 1 cooling section place is communicated with the entrance of described cyclone separator 34, and the gas delivery port of described cyclone separator 34 connects chimney.
The solid delivery outlet that is positioned at described three cyclone separators, 2,3,4 lower ends is parallel with one another in the recovered material input port of described vibrating fluid bed dryer 1.The cooled ammonium sulfate powder finally obtaining at vibrating fluid bed dryer 1 end, is transported in described ammonium sulfate hopper 5.Described ammonium sulfate hopper 5 connects automatic packaging process.
The outlet of described air-introduced machine 6 is communicated with the gas medium entrance of described heat exchanger 7, and the gas medium outlet of described heat exchanger 7 is communicated with the entrance of described air-heater 8, and the outlet of described air-heater 8 is communicated with the dry hot gas entrance of described vibrating fluid bed dryer 1., after crystallization feeder channel 12 intercrystallines, sent in described vibrating fluid bed dryer 1 obtaining moist ammonium sulfate powder after sending into centrifuge 11 refinements by the ammonium sulfate liquid of saturator 13 interior generations.
Moist ammonium sulfate powder is sent into by the left end entrance of described vibrating fluid bed dryer 1, successively through after one section on vibrating fluid bed dryer 1, two sections and cooling section part, finally after cooling section place is cooling to ammonium sulfate solids by air-cooler, be delivered in ammonium sulfate hopper 5 to the right.
The present invention is by the structure of the tail gas discharge section of transformation vibrating fluid bed dryer 1, realize the abundant recovery of vibrating fluid bed dryer 1 being discharged to tail gas latent heat, thereby reduce the fuel consumption of the thermal medium (steam or conduction oil) of the described heat exchanger 7 of heating, reduce cost, obtained environmental benefit simultaneously.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and modification, these improve and modification also should be considered as protection scope of the present invention.
Except the technical characterictic described in description, be the known technology of those skilled in the art.
Claims (3)
1. the cyclic utilization system with vibrating fluid bed dryer tail gas to dry ammonium sulfate, involving vibrations fluidized bed dryer, air-introduced machine, heat exchanger, air-heater, is characterized in that:
Also comprise three cyclone separators and two heat exchange of heat pipes,
On corresponding vibrating fluid bed dryer one section, two sections and cooling section part arrange respectively flue gas output channel;
Be communicated with the entrance of a cyclone separator in one section of flue gas output channel of locating to arrange, and the gas delivery port of this cyclone separator connects the thermal medium entrance of a heat exchange of heat pipe lower end, the thermal medium outlet of this heat exchange of heat pipe upper end connects chimney, cold air is sent into by the gas medium entrance of this heat exchange of heat pipe upper end, the gas medium outlet of this heat exchange of heat pipe lower end is communicated with the gas medium entrance of another described heat exchange of heat pipe upper end, and the gas medium outlet of this another heat exchange of heat pipe lower end is communicated with the entrance of described air-introduced machine;
Be communicated with the entrance of second cyclone separator in two sections of flue gas output channels of locating to arrange, and the gas delivery port of this second cyclone separator connects the thermal medium entrance of another described heat exchange of heat pipe lower end, the thermal medium outlet of this another heat exchange of heat pipe upper end connects chimney;
The flue gas output channel arranging in cooling section place is communicated with the entrance of the 3rd described cyclone separator, and the gas delivery port of the 3rd cyclone separator connects chimney;
Solid delivery outlet on three described cyclone separators is parallel to the recovered material input port of described vibrating fluid bed dryer;
The outlet of described air-introduced machine is communicated with the gas medium entrance of described heat exchanger, and the gas medium outlet of described heat exchanger is communicated with the entrance of described air-heater, and the outlet of described air-heater is communicated with the dry hot gas entrance of described vibrating fluid bed dryer.
2. the cyclic utilization system of dry ammonium sulfate being used to vibrating fluid bed dryer tail gas according to claim 1, is characterized in that: the surface at each described heat exchange of heat pipe arranges respectively heat-insulation layer.
3. the cyclic utilization system of dry ammonium sulfate being used to vibrating fluid bed dryer tail gas according to claim 1 and 2, is characterized in that: described heat exchange of heat pipe is shell-and-tube heat exchanger or eddy current hotting mask heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410236298.6A CN103983097B (en) | 2014-05-29 | 2014-05-29 | To the cyclic utilization system of dry ammonium sulfate vibrating fluid bed dryer tail gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410236298.6A CN103983097B (en) | 2014-05-29 | 2014-05-29 | To the cyclic utilization system of dry ammonium sulfate vibrating fluid bed dryer tail gas |
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| CN103983097A true CN103983097A (en) | 2014-08-13 |
| CN103983097B CN103983097B (en) | 2015-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423690A (en) * | 2018-03-23 | 2018-08-21 | 天华化工机械及自动化研究设计院有限公司 | A kind of method that heat pump flash distillation stripping deamination directly generates solid ammonium sulfate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853644A (en) * | 2012-09-27 | 2013-01-02 | 李严光 | Tail gas circulating pneumatic drier |
| CN203310203U (en) * | 2013-05-28 | 2013-11-27 | 山东科院天力节能工程有限公司 | Ammonium sulfate drying system |
| CN203893639U (en) * | 2014-05-29 | 2014-10-22 | 济钢集团有限公司 | Tail gas cyclic utilization system of vibrated fluidized bed dryer for drying ammonium sulfate |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853644A (en) * | 2012-09-27 | 2013-01-02 | 李严光 | Tail gas circulating pneumatic drier |
| CN203310203U (en) * | 2013-05-28 | 2013-11-27 | 山东科院天力节能工程有限公司 | Ammonium sulfate drying system |
| CN203893639U (en) * | 2014-05-29 | 2014-10-22 | 济钢集团有限公司 | Tail gas cyclic utilization system of vibrated fluidized bed dryer for drying ammonium sulfate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108423690A (en) * | 2018-03-23 | 2018-08-21 | 天华化工机械及自动化研究设计院有限公司 | A kind of method that heat pump flash distillation stripping deamination directly generates solid ammonium sulfate |
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| CN103983097B (en) | 2015-08-19 |
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Granted publication date: 20150819 Termination date: 20190529 |