CN203569033U - Rotary destructive distillation device with combination of external heat and solid thermal carriers - Google Patents
Rotary destructive distillation device with combination of external heat and solid thermal carriers Download PDFInfo
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- CN203569033U CN203569033U CN201320653891.1U CN201320653891U CN203569033U CN 203569033 U CN203569033 U CN 203569033U CN 201320653891 U CN201320653891 U CN 201320653891U CN 203569033 U CN203569033 U CN 203569033U
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- destructive distillation
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Abstract
The utility model discloses a rotary destructive distillation device with combination of external heat and solid thermal carriers. The device comprises a raw coal preheating drying furnace, a semicoke heating furnace and a destructive distillation furnace, wherein the raw coal preheating drying furnace and the semicoke heating furnace are positioned above the destructive distillation furnace; the material outlets of the raw coal preheating drying furnace and the semicoke heating furnace are both communicated with the material inlet of the destructive distillation furnace; the destructive distillation furnace is communicated with the semicoke heating furnace through a thermal coked particle conveying system; preferably, an external heat type destructive distillation furnace is adopted as the destructive distillation furnace. When the device is used for destructive distillation, the thermal carriers and the raw coal which is dried and preheated are mixed in the destructive distillation furnace for destructive distillation to generate thermal semicoke and coal gas, one part of the semicoke is a semicoke product, and the other part of the semicoke is the thermal coked particles which are used as the thermal carriers after being heated and also used for dust removal of coal gas; the fume generated when the semicoke is heated is used for drying and preheating the raw coal. The device disclosed by the utility model has the characteristics of high heat efficiency, low coal gas thermal value, low dust content, large capacity, compact structure and small occupied space.
Description
Technical field
The utility model relates to coal retorting technique, is specifically related to the rotary type destructive distillation device that a kind of external-heat and solid thermal carriers combine.
Background technology
Existing vertical type coal distillation process is internal heat type, and caloric power of gas is low, and a nitrogen content is high, and can not destructive distillation face coal.In addition, in vertical type fluidized bed type solid thermal carriers circulation destructive distillation face coal process, circulation semicoke lift height is large, energy consumption is high, and in coal gas, dust is large, and the operation of retort process material is not smooth, easily cause equipment to stop up, the tar heavy component that produces many, the easy adhering device of tar and dust mixture, not easily separated etc.And traditional outer hot rotary type destructive distillation exists that destructive distillation thermo-efficiency is low, output amplify after the problems such as equipment is huge.
Summary of the invention
For defect or the deficiency of prior art, the utility model object provides a kind of device of realizing above-mentioned technique.
The device that the utility model provides for this reason comprises: raw coal preheating and drying stove, semicoke process furnace and gas retort; Described raw coal preheating and drying stove and semicoke process furnace are positioned at gas retort top;
Described raw coal preheating and drying stove is provided with material inlet and material outlet;
Described semicoke process furnace is provided with material inlet and material outlet;
Described gas retort is provided with the burnt grain outlet of material inlet, gas exit, semicoke outlet and heat;
The material outlet of described raw coal preheating and drying stove and semicoke process furnace is all communicated with the material inlet of gas retort;
The burnt grain outlet of heat on described gas retort is communicated with the material inlet on described semicoke process furnace.
The other technologies feature of said apparatus is:
Gas exit on described gas retort and material inlet are positioned at end.
On described raw coal preheating and drying stove, be also provided with gas approach and exhanst gas outlet; The burnt grain outlet of heat on described gas retort is communicated with by the burnt grain of heat cyclic delivery system with the material inlet on described semicoke process furnace; Material outlet on described semicoke process furnace is communicated with the gas approach on described raw coal preheating and drying stove by the burnt grain of heat cyclic delivery system.
The burnt grain of described heat cyclic delivery system comprises the burnt grain of heat conveyance drum blower fan, cyclone type gas-solid separating device and cleaning apparatus.
Described gas retort is externally heated retort oven, and externally heated retort oven provides thermal source by hot flue gas, and the hot flue gas after externally heated retort oven is conveyed into raw coal preheating and drying stove raw coal is carried out to drying and preheating.
Compared with prior art, the beneficial effects of the utility model are:
(1) in traditional vertical type thermal barrier distillation process, the mass ratio of thermal barrier and raw coal is approximately 3:1, and lift height is large.And thermal barrier transportation route in the utility model distillation process is short, thermal losses is low, needs thermal barrier internal circulating load little in actual process, general thermal barrier be approximately 1:(1～2 with the mass ratio of raw coal).
(2) in distillation process of the present utility model thermal barrier in to raw coal heating destructive distillation for filtering the dust of coal gas.
(3) in distillation process of the present utility model, thermal barrier internal circulating load reduces, and in coal gas, Dust Capacity is few.
(4) in distillation process of the present utility model, caloric power of gas is high, and nitrogen component content is low.
(5) flue gas carrying out after heat exchange with raw coal in distillation process of the present utility model passes through dedusting rear portion for delivery of the burnt grain of heat, a part is discharged, make the physics moisture in raw coal not enter coal gas system, can reduce tar system wastewater flow rate, environmental.
(6) material horizontal gyrating type operation in device of the present utility model, is difficult for stopping up convenient operation.
(7) in device of the present utility model, utilize thermal barrier to filter gas dust, simplify filtration process and equipment.
(8) gas retort external-heat heating in device of the present utility model, is convenient to control gas retort temperature schedule, with the combination of solid thermal carriers heating, has increased the thermo-efficiency of rotary type distillation apparatus.
(9) device of the present utility model is convenient to industry amplification, can realize scale operation.
(10) apparatus structure compactness of the present utility model, floor space is less.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and embodiment, the utility model is further explained to explanation.
Fig. 1 is the structure reference view of the utility model device;
Fig. 2 is a right side view of Fig. 1;
Fig. 3 is the plan structure reference view of the utility model device;
Fig. 4 is the left side view of Fig. 3;
Each coded representation in figure: 1-raw coal preheating and drying stove, 2-semicoke process furnace, 3-gas retort, the burnt grain of 4-heat cyclic delivery system, 5-cleaning apparatus, the burnt grain of 6-heat conveyance drum blower fan, 7-cyclone type gas-solid separating device, the burnt grain of 8-heat riser tubing, 9-semicoke chain type coolconveyer, 10-gas pipe, 11-coal gas burner, 12-semicoke granule dedusting and blanking bin, 13-pushing machine, 14-goes out stoving oven flue, the hot flue gas total pipeline of 15-, 16-raw coal bucket elevator, 17-flue gas exhausting pipe line.
Embodiment
Referring to figs. 1 to Fig. 4, the rotary type destructive distillation device that external-heat of the present utility model and solid thermal carriers combine comprises raw coal preheating and drying stove 1, semicoke process furnace 2 and gas retort 3, wherein raw coal preheating and drying stove 1 and semicoke process furnace 2 are positioned at gas retort 3 tops, three is generally and be arranged in parallel, and raw coal preheating and drying stove 1, 3 points of two-layer be arrangeding in parallel of semicoke process furnace 2 and gas retort, gas retort 3 is placed in bottom, wherein the material outlet of raw coal preheating and drying stove 1 and semicoke process furnace 2 is all communicated with the material inlet of gas retort 3, realizing raw coal and thermal barrier jointly enters gas retort 3 and carries out destructive distillation.Certainly, identical with prior art is that gas retort 3 is provided with corresponding gas exit 10 and semicoke chain type coolconveyer 9, and raw coal is sent into raw coal preheating and drying stove 1 by raw coal bucket elevator 16.
Consider that thermal barrier can be used for filtering the dust in coal gas in to raw coal heating destructive distillation, the gas exit 10 on gas retort 3 and material inlet are positioned at end, as shown in Figures 1 to 3.
Burnt the conveying to semicoke process furnace 2 of heat of discharging for realizing gas retort 3, between gas retort 3 and semicoke process furnace 2, by the burnt grain of heat cyclic delivery system 4, be communicated with, simultaneously, for realizing the utilization of high-temperature flue gas, the material outlet on semicoke process furnace 2 is communicated with the gas approach on raw coal preheating and drying stove 1 by the burnt grain of heat cyclic delivery system 4.Specifically, the burnt grain of heat cyclic delivery system 4 is provided with the import of the burnt grain of heat, the burnt grain outlet of heat and exhanst gas outlet, and the burnt grain of the heat import on the burnt grain of heat cyclic delivery system 4 is communicated with the burnt grain outlet of heat on gas retort 3; The burnt grain outlet of heat on the burnt grain of heat cyclic delivery system 4 is communicated with the material inlet on semicoke process furnace 2, and the exhanst gas outlet on the burnt grain of heat cyclic delivery system 4 is communicated with the gas approach on raw coal preheating and drying stove 1.With reference to as shown in Figure 3, can realize by hot flue gas total pipeline 15 connection of aforesaid device.
Consider the application to the flue gas after cooling, on the burnt grain of heat cyclic delivery system 4, be also provided with gas approach, the exhanst gas outlet of preheating and drying stove 1 is communicated with by cleaning apparatus with the gas approach on the burnt grain of heat cyclic delivery system 4.With reference to as shown in Figure 4, can realize by going out stoving oven flue 14 both connections, thereby part of smoke enters the burnt grain of heat cyclic delivery system 4 through going out stoving oven flue 14, a part of cold flue gas is exported through flue gas exhausting pipe line 17.
In addition, when gas retort 3 is selected external-heat externally heated retort oven, the flue gas of discharging in externally heated retort oven, also can be used for raw coal to carry out preheating and drying.
Consider the relation setting up and down of equipment and the optimization of technique, the burnt grain of heat cyclic delivery system 4 can comprise cleaning apparatus 5, the burnt grain of heat conveyance drum blower fan 6, cyclone type gas-solid separating device 7, the burnt grain of heat riser tubing 8.Shown in figure 4, cleaning apparatus 5, the burnt grain of heat conveyance drum blower fan 6 are connected along the trend of gas successively with cyclone type gas-solid separating device 7, and wherein heat burnt grain conveyance drum blower fan 6 and cyclone type gas-solid separating device 7 are communicated with by the burnt grain of heat riser tubing 8.
For realizing raw coal and thermal barrier, enter smoothly gas retort 3, with reference to figure 1,2 and 3, can semicoke particle dust-collecting equipment and blanking bin 12 and pushing machine 13 be installed at equipment connection place, the raw coal after drying and preheating and thermal barrier are sent into gas retort by horizontal feed device like this, guarantee that mass transport is smooth and easy.
Thermal source in the utility model semicoke process furnace 2 can pass through the confession of coal combustion air lift, shown in figure 1 and 3, through coal gas burner 11, carries coal gas to carry out combustion heat supplying.
Embodiment:
Follow the technical solution of the utility model, the gas retort 3 in this embodiment is externally heated retort oven, and this externally heated retort oven is heated separately and the hot blast import and export temperature of externally heated retort oven 3 is respectively 1000 ℃ and 600 ℃.
In conjunction with above-mentioned, explain, the principle of work of device is as follows:
(1) raw coal is after raw coal bucket elevator 16 enters raw coal preheating and drying stove 1 drying and forewarm, raw coal temperature enters blanking bin 12 and 800～1000 ℃ of thermal barrier from semicoke process furnace 2 while reaching 150～300 ℃ of left and right, according to 1:(1～2) ratio, after mixing, be pushed into externally heated retort oven.
(2) thermal barrier after the raw coal after preheating and heating is in the interior heat exchange of externally heated retort oven 3 after 30～45 minutes, realize the pyrolysis of raw coal, raw coal forms hot semicoke, the hot semicoke of part recycles, by gas blower, risen in solid and gas tripping device, realize solid and gas and separate, isolated flue gas enters raw coal preheating and drying stove 1 subsequently and raw coal carries out heat exchange.In semicoke process furnace 2, be heated to 800～1000 ℃ and enter semicoke particle dust-collecting equipment and blanking bin 12, be mixed into externally heated retort oven with the raw coal after preheating, the flue gas that semicoke process furnace produces flue gas and the outlet of solid and gas tripping device together enters raw coal preheating and drying stove 1.
(3) the hot semicoke part of 500～600 ℃ after destructive distillation is returned to circulating-heating, as thermal barrier, use, another part is carried and is discharged by semicoke chain type coolconveyer 9 as product, pyrolysis coal gas is drawn from gas retort, after dedusting, by gas pipe 10, enter gas cleaning system, purify cooling rear section coal gas for hot semicoke heating and externally heated retort oven heating, all the other are for other purposes.
(4) enter raw coal preheating and drying stove 1 preheating raw coal after temperature drop to the flue gas of 200～300 ℃, after cleaning apparatus dedusting is cooling, part recycle, for promoting semicoke, a part emits.
(5) after the flue gas waste heat recovery that the externally heated retort oven of heating produces separately, entering flue emits.
Claims (5)
1. the rotary type destructive distillation device that external-heat and solid thermal carriers combine, is characterized in that, device comprises raw coal preheating and drying stove, semicoke process furnace and gas retort,
Described raw coal preheating and drying stove is provided with material inlet and material outlet;
Described semicoke process furnace is provided with material inlet and material outlet;
Described gas retort is provided with the burnt grain outlet of material inlet, gas exit, semicoke outlet and heat;
Described raw coal preheating and drying stove and semicoke process furnace are positioned at gas retort top; The material outlet of described raw coal preheating and drying stove and semicoke process furnace is all communicated with the material inlet of gas retort;
The burnt grain outlet of heat on described gas retort is communicated with the material inlet on described semicoke process furnace.
2. the rotary type destructive distillation device that external-heat as claimed in claim 1 and solid thermal carriers combine, is characterized in that, the gas exit on described gas retort and material inlet are positioned at end.
3. the rotary type destructive distillation device that external-heat as claimed in claim 1 and solid thermal carriers combine, is characterized in that, on described raw coal preheating and drying stove, is also provided with gas approach and exhanst gas outlet; The burnt grain outlet of heat on described gas retort is communicated with by the burnt grain of heat cyclic delivery system with the material inlet on described semicoke process furnace; Material outlet on described semicoke process furnace is communicated with the gas approach on described raw coal preheating and drying stove by the burnt grain of heat cyclic delivery system.
4. the rotary type destructive distillation device that external-heat as claimed in claim 3 and solid thermal carriers combine, is characterized in that, the burnt grain of described heat cyclic delivery system comprises the burnt grain of heat conveyance drum blower fan, cyclone type gas-solid separating device and cleaning apparatus.
5. the rotary type destructive distillation device that the external-heat as described in claim as arbitrary in claim 1-4 and solid thermal carriers combine, it is characterized in that, described gas retort is externally heated retort oven, externally heated retort oven is by hot flue gas heat supply, and the hot flue gas after externally heated retort oven is conveyed into raw coal preheating and drying stove raw coal is carried out to drying and preheating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320653891.1U CN203569033U (en) | 2013-10-22 | 2013-10-22 | Rotary destructive distillation device with combination of external heat and solid thermal carriers |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320653891.1U CN203569033U (en) | 2013-10-22 | 2013-10-22 | Rotary destructive distillation device with combination of external heat and solid thermal carriers |
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| CN203569033U true CN203569033U (en) | 2014-04-30 |
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| CN201320653891.1U Expired - Fee Related CN203569033U (en) | 2013-10-22 | 2013-10-22 | Rotary destructive distillation device with combination of external heat and solid thermal carriers |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589442A (en) * | 2013-10-22 | 2014-02-19 | 长安大学 | External-heated and solid heat carrier combined rotary dry-distillation method and device |
| CN104164242A (en) * | 2014-08-26 | 2014-11-26 | 江苏鹏飞集团股份有限公司 | Integrated solid heat carrier dry distillation system |
-
2013
- 2013-10-22 CN CN201320653891.1U patent/CN203569033U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103589442A (en) * | 2013-10-22 | 2014-02-19 | 长安大学 | External-heated and solid heat carrier combined rotary dry-distillation method and device |
| CN103589442B (en) * | 2013-10-22 | 2015-11-18 | 长安大学 | The rotary type method for destructive distillation that a kind of external-heat is combined with solid thermal carriers and device |
| CN104164242A (en) * | 2014-08-26 | 2014-11-26 | 江苏鹏飞集团股份有限公司 | Integrated solid heat carrier dry distillation system |
| CN104164242B (en) * | 2014-08-26 | 2016-01-20 | 江苏鹏飞集团股份有限公司 | Integral type hot solid carrier devolatilization system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140430 Termination date: 20161022 |