CN207192802U - A kind of system for producing calcium carbide - Google Patents
A kind of system for producing calcium carbide Download PDFInfo
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- CN207192802U CN207192802U CN201720847465.XU CN201720847465U CN207192802U CN 207192802 U CN207192802 U CN 207192802U CN 201720847465 U CN201720847465 U CN 201720847465U CN 207192802 U CN207192802 U CN 207192802U
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- calcium carbide
- coke oven
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Abstract
The utility model discloses a kind of system for producing calcium carbide, and it includes powder raw material forming unit, ball material pyrolysis unit, raw coke oven gas separative element and calcium carbide and smelts unit.Powder raw material forming unit includes mixing device and press ball device, raw coke oven gas separative element includes Other heat exchange devices and water spray system, press ball device is connected with mixing device and ball material pyrolysis unit respectively, Other heat exchange devices are connected with ball material pyrolysis unit and water spray system respectively, and calcium carbide is smelted unit and is connected with ball material pyrolysis unit.The utility model is passed through preheating furnace lower hearth by setting gas heat exchanger to realize the heat exchange of raw coke oven gas and purified gas, and by purified gas after heat exchange, realizes the utilization of crude-gas sensible heat.
Description
Technical field
The utility model belongs to chemical technology field, in particular it relates to a kind of system for producing calcium carbide.
Background technology
At present, the raw material that calcium carbide is smelted is based on quality block semi-coke and lump lime.Not only cost of material is high, and block
Shape semi-coke and the contact area of quick lime are small, and rate of heat transfer is slow, cause reaction temperature high, power consumption is high.Moreover, waving in coal
Hair point is most of to be discharged into air in the form of waste gas, dust, brings serious environmental problem.Therefore, current calcium carbide life
There is the drawbacks of high temperature, highly energy-consuming, high pollution for production. art.
For these problems, domestic and international researchers have all done many beneficial explorations, such as use low-quality middle low order
Coal is raw material, and the type ball for meeting calcium carbide production requirement is made by forming technique.In the prior art, low-order coal and powdery in powdery
High temperature active pelletizing can be obtained through revolving bed pyrolysis after quick lime mixing pressure ball, is used further to prepare calcium carbide, pyrolysis of coal and electricity can be achieved
The coupling of stone production technology, not only make full use of the sensible heat of pyrolysis solid, and the oil gas product of a large amount of high added values of by-product.
But in the process, simply the heat of high temperature active pelletizing after pyrolysis is fully used, and raw coke oven gas
Entrained amount of heat is cooled in subsequent separation process and wasted；Meanwhile in the technique radiant tube single-side heating heating
Speed is slower.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of calcium carbide production that can be improved calcium carbide and smelt the thermal efficiency
System, the system include powder raw material forming unit, ball material pyrolysis unit, raw coke oven gas separative element and calcium carbide and smelt unit；
The powder raw material forming unit includes mixing device and press ball device；
The mixing device is provided with fine coal entrance, quick lime entrance, binding agent entrance and batch mixing outlet；
The press ball device is provided with batch mixing entrance and pelletizing exports, and the batch mixing of the batch mixing entrance and the mixing device goes out
Mouth is connected；
The ball material pyrolysis unit is provided with pelletizing entrance, purified gas entrance, raw coke oven gas outlet and the outlet of high temperature active pelletizing,
The pelletizing entrance is connected with the pelletizing outlet of the press ball device；
The raw coke oven gas separative element includes Other heat exchange devices and water spray system；
The Other heat exchange devices are provided with high temperature raw coke oven gas entrance, low temperature purified gas entrance, the outlet of low temperature raw coke oven gas and height
Warm purified gas outlet, the high temperature raw coke oven gas entrance are connected with the raw coke oven gas outlet of the ball material pyrolysis unit, and the high temperature is net
Gas exit is connected with the purified gas entrance of the ball material pyrolysis unit；
The water spray system be provided with low temperature raw coke oven gas entrance, cooling water inlet, low temperature purified gas outlet, light oil outlet,
Water out and heavy oil outlet, the low temperature raw coke oven gas entrance are connected with the low temperature raw coke oven gas outlet of the Other heat exchange devices, institute
The outlet of low temperature purified gas is stated with the low temperature purified gas entrance of the Other heat exchange devices to be connected；
The calcium carbide smelts unit and is provided with high temperature active pelletizing entrance, calcium carbide furnace gas outlet and calcium carbide outlet, the high temperature
Active pelletizing entrance is connected with the high temperature active pelletizing outlet of the ball material pyrolysis unit.
In some embodiments of the utility model, the device of the ball material pyrolysis unit is preheating furnace, the preheating furnace
Horizontal rotation flitch is internally provided with, body of heater is divided into upper furnace and lower hearth by the horizontal rotation flitch.
In some embodiments of the utility model, the heater of the preheating furnace is heat accumulation type radiant tube, the storage
Hot type radiant tube is positioned at the top of the horizontal rotation flitch, and along the parallel distribution of surrounding of the preheating furnace.
In some embodiments of the utility model, the lower hearth is internally provided with gas distribution between closed make somebody a mere figurehead
Device；The horizontal rotation flitch is provided with material hole, and the purified gas entrance is arranged in the side wall of the lower hearth.
In some embodiments of the utility model, cooling water pipeline, the cooling water are provided with the water spray system
One end of pipeline is the cooling water inlet, and the cooling water pipeline is provided with multiple staggered nozzles.
Be provided with baffle plate in some embodiments of the utility model, in the water spray system, the baffle plate with it is described cold
But the waterpipe other end is mutually perpendicular to, and the bottom of the baffle plate is located at the lower section of low temperature purified gas outlet.
In some embodiments of the utility model, the height of the high temperature active pelletizing entrance and the ball material pyrolysis unit
The active pelletizing outlet of temperature is connected by sealed thermal insulating conveying device.
The utility model realizes the heat exchange of raw coke oven gas and purified gas by setting gas heat exchanger, and will be after heat exchange
Purified gas is passed through preheating furnace lower hearth, realizes the utilization of crude-gas sensible heat.In addition, will after heat exchange high temperature purified gas from pyrolysis installation
Bottom inputs, and by being pyrolyzed pelletizing bed, the heating of radiant tube single side radiation is become into two-sided convection heat transfer' heat-transfer by convection, improves pyrolysis effect
Rate.Moreover, raw coke oven gas is passed through pyrolysis installation after first passing through purification, the tar that raw coke oven gas direct reuse can be avoided to bring separates out and pipe
Road blockage problem.
Additional aspect and advantage of the present utility model will be set forth in part in the description, partly by from following description
In become obvious, or by it is of the present utility model practice recognize.
Brief description of the drawings
Fig. 1 is a kind of structural representation of system for producing calcium carbide in the utility model embodiment.
Embodiment
Below in conjunction with drawings and examples, specific embodiment of the present utility model is described in more details, with
Just the advantages of better understood when scheme of the present utility model and its various aspects.However, specific implementations described below
Mode and embodiment are for illustrative purposes only, rather than to limitation of the present utility model.
As shown in figure 1, system for producing calcium carbide provided by the utility model includes powder raw material forming unit 1, ball material is pyrolyzed
Unit 2, raw coke oven gas separative element 3 and calcium carbide smelt unit 4.
Powder raw material forming unit 1 includes mixing device 1-1 and press ball device 1-2.Mixing device 1-1 is used for powdery
Raw material is well mixed.Press ball device 1-2 is used for well mixed batch mixing is compressing.
Mixing device 1-1 is provided with fine coal entrance 1-11, quick lime entrance 1-12, binding agent entrance 1-13 and batch mixing outlet
1-14.Machine,massing 1-15 is provided with inside mixing device 1-1.
Press ball device 1-2 is provided with batch mixing entrance 1-21 and pelletizing outlet 1-22.Batch mixing entrance 1-21 and mixing device 1-1's
Batch mixing outlet 1-14 is connected.
In the utility model preferred embodiment, press ball device 1-2 is two pairs of rollers ball press.During two pairs of rollers ball press pressure ball
Briquetting pressure is big, and obtained pellet strength is high, is not easy to crush.
Ball material pyrolysis unit 2 is used to be pyrolyzed the pelletizing after shaping.Ball material pyrolysis unit 2 is provided with pelletizing entrance 21, purified gas
Entrance 22, raw coke oven gas outlet 23 and high temperature active pelletizing outlet 24.Pelletizing entrance 21 and press ball device 1-2 pelletizing outlet 1-
22 are connected.
In the utility model preferred embodiment, the device of ball material pyrolysis unit 2 is preheating furnace, and preheating furnace is internally provided with
Flitch is rotated horizontally, flitch is rotated horizontally and body of heater is divided into upper furnace and lower hearth.
In the further preferred embodiment of the utility model, the heater of preheating furnace is heat accumulation type radiant tube, accumulation of heat
Formula radiant tube is positioned at the top for rotating horizontally flitch, and along the parallel distribution of surrounding of preheating furnace.The heating effect being arranged so as to is more
It is good.
In the further preferred embodiment of the utility model, lower hearth is internally provided with gas point between closed make somebody a mere figurehead
Cloth device；Rotate horizontally flitch and be provided with material hole, purified gas entrance 22 is arranged in the side wall of lower hearth.High temperature clean coal after heat exchange
Gas passes through flitch with holes after lower hearth entrance after gas distributor is uniformly distributed, and realizes the convection heat transfer' heat-transfer by convection to material.Expect hole
Set more uniform, purified gas is distributed more uniform, and in the embodiment of the utility model still more preferably, material hole is equably
It is arranged on and rotates horizontally on flitch.
High temperature purified gas inputs from pyrolysis installation bottom after exchanging heat, by being pyrolyzed pelletizing bed, by radiant tube one side spoke
Penetrate heating and become two-sided convection heat transfer' heat-transfer by convection, improve pyrolysis efficiency.
Raw coke oven gas separative element 3 includes Other heat exchange devices 3-1 and water spray system 3-2.Other heat exchange devices 3-1 is used for
High temperature raw coke oven gas and low temperature purified gas are exchanged heat.Water spray system 3-2 is used to separate raw coke oven gas.
Other heat exchange devices 3-1 is provided with high temperature raw coke oven gas entrance 3-11, low temperature purified gas entrance 3-12, low temperature raw coke oven gas and gone out
Mouth 3-13 and high temperature purified gas outlet 3-14.High temperature raw coke oven gas entrance 3-11 and ball material pyrolysis unit 2 raw coke oven gas export 23 phases
Even, high temperature purified gas outlet 3-14 is connected with the purified gas entrance 22 of ball material pyrolysis unit 2.
The utility model realizes the heat exchange of raw coke oven gas and purified gas by setting gas heat exchanger, and will be after heat exchange
Purified gas is passed through preheating furnace lower hearth, realizes the utilization of crude-gas sensible heat.
Water spray system 3-2 is provided with low temperature raw coke oven gas entrance 3-21, cooling water inlet 3-22, low temperature purified gas outlet 3-
23rd, light oil outlet 3-24, water out 3-25 and heavy oil outlet 3-26.Low temperature raw coke oven gas entrance 3-21 and Other heat exchange devices 3-1
Low temperature raw coke oven gas outlet 3-13 be connected, the outlet of low temperature purified gas 3-23 and Other heat exchange devices 3-1 low temperature purified gas entrance
3-12 is connected.
Raw coke oven gas is passed through pyrolysis installation after first passing through purification, and the tar that raw coke oven gas direct reuse can be avoided to bring separates out and pipe
Road blockage problem.
In utility model preferred embodiment, cooling water pipeline is provided with water spray system 3-2, wherein, cooling water pipe
The one end in road is cooling water inlet 3-22, and cooling water pipeline is provided with multiple staggered nozzle 3-27, to ensure cooling water
With fully contacting for raw coke oven gas.
In order to be further ensured that fully contacting for cooling water and raw coke oven gas, in the further preferred embodiment of the utility model
In, baffle plate 3-28 is provided with water spray system 3-2, baffle plate 3-28 is mutually perpendicular to the cooling water pipeline other end, baffle plate 3-28's
Bottom is located at low temperature purified gas outlet 3-23 lower section.
Calcium carbide smelts unit 4 and is used to smelt calcium carbide.Calcium carbide smelts unit 4 and is provided with high temperature active pelletizing entrance 41, furnace of calcium carbide
Gas outlet 42 and calcium carbide outlet 43.The high temperature active pelletizing of high temperature active pelletizing entrance 41 and ball material pyrolysis unit 2 exports 24 phases
Even.
High temperature active pelletizing calorific value is high, and in the utility model preferred embodiment, the high temperature that calcium carbide smelts unit 4 is lived
Property ball material entrance 41 be connected with the high temperature active pelletizing outlet 24 of ball material pyrolysis unit 2 by sealed thermal insulating conveying device.Fully
The high advantage of active ball material temperature degree is make use of, reduces the energy consumption of calcium carbide production.
Method using said system production calcium carbide comprises the following steps：
Powder raw material is molded：Pressure is inserted after fine coal, powdery quick lime are well mixed with binding agent in mixing device 1-1
Extrusion forming in ball device 1-2, obtain pelletizing.
Wherein, the temperature of shaping is normal temperature.When press ball device 1-2 is two pairs of rollers ball press, cylinder pressure 19MPa,
In order to reduce the percentage of damage of the pelletizing subsequently in course of conveying, obtained pelletizing needs certain intensity, excellent in the utility model
In the embodiment of choosing, the intensity need >=400N of pelletizing.
The granularity of fine coal and quick lime is smaller, and mixed effect is better, in the utility model preferred embodiment, fine coal
Granularity≤1mm, granularity≤3mm of quick lime.
Ball material is pyrolyzed：Pelletizing after shaping passes through enters goal material pyrolysis unit 2 from top, and is arrived by the uniform cloth of distribution device
Expect on bed, after material has been pyrolyzed, obtain raw coke oven gas and high temperature active pelletizing.
When the device of ball material pyrolysis unit 2 is preheating furnace, its mode of heating is that heat accumulation type radiant tube radiant heating is aided with
Pyrolysis gas convection heat transfer' heat-transfer by convection.Pyrolysis temperature is too low, and pyrolysis effect is poor, and temperature is too high, wasted heat, preferably real in the utility model
Apply in example, the temperature of pyrolysis is 800 DEG C -1000 DEG C, time 30min-60min.
Raw coke oven gas separates：Raw coke oven gas caused by pyrolysis is first conveyed to Other heat exchange devices 3-1, is changed with low temperature purified gas
Water spray system 3-2 coolings, dedusting, separation are sent into after heat, obtains purified gas, tar light oil, water and heavy tar.Part clean coal
Gas through the laggard goal material pyrolysis unit 2 of Other heat exchange devices 3-1 heat exchange, uses, remainder enters storage tank as fuel again
It is standby.
When ball material pyrolysis unit 2 is preheating furnace, the purified gas after heat exchange enters lower stove from the lower hearth side wall of preheating furnace
Thorax, by horizontal rotation flitch with holes after gas distributor, realize the convection heat transfer' heat-transfer by convection of material.
For purified gas after Other heat exchange devices 3-1 heat exchange, the temperature of obtained high temperature purified gas is 450 DEG C -550 DEG C.
Calcium carbide is smelted：High temperature active pelletizing is transported to calcium carbide and smelts unit 4, smelts and liquid calcium carbide and calcium carbide furnace gas is made.
The temperature that calcium carbide is smelted is too low, calcium carbide can not be made, temperature is too high, wasted heat, preferable in the utility model
In embodiment, the temperature that calcium carbide is smelted is 1800 DEG C -2200 DEG C.
Below with reference to specific embodiment, the utility model is illustrated.Institute's taking technique condition value in following embodiments
It is exemplary, its desirable number range is as shown in foregoing utility model content, for especially not dated technological parameter,
It can refer to routine techniques progress.Detection method used in following embodiments is the conventional detection method of the industry.
Embodiment
It is as follows using the system production calcium carbide shown in Fig. 1, idiographic flow：
By low-order coal, 3mm quick lime and binding agent in broken 1mm powdery in intensive mixer (mixing device 1-
1) the interior extrusion forming of two pairs of rollers ball press (press ball device 1-2) is placed in after being well mixed in, the wherein pressure of hydraulic cylinder is 19MPa.
Gained pelletizing passes through Belt Conveying to preheating furnace (ball material pyrolysis unit 2).Pelletizing enters slow from the top of preheating furnace
Storehouse is rushed, and through on the uniform cloth of distribution device to flitch, being pyrolyzed 30min at 900 DEG C, produces high temperature raw coke oven gas and high temperature active
Pelletizing.
Raw coke oven gas caused by pyrolysis is transported to gas heat exchanger (Other heat exchange devices 3-1), and Water spray is sent into after heat exchange
Tower (water spray system 3-2) cooling, dedusting, separation, obtain purified gas, tar light oil, water and heavy tar.Purified gas is in gas
Heat exchanger is warming up to 500 DEG C in raw coke oven gas caused by pyrolysis after heat exchange, is re-fed into the lower hearth of pyrolysis oven, is distributed through gas
By flitch with holes after device, the convection heat transfer' heat-transfer by convection of material is realized.
The warm conveying device of high temperature active pelletizing of pyrolysis gained delivers to furnace of calcium carbide (calcium carbide smelts unit 4), in calcium carbide
1800 DEG C -2200 DEG C are heated in stove, smelts and liquid calcium carbide and calcium carbide furnace gas is made.
It was found from above-described embodiment, the utility model is by setting gas heat exchanger to realize the heat of raw coke oven gas and purified gas
Amount is exchanged, and purified gas after heat exchange is passed through into preheating furnace lower hearth, realizes the utilization of crude-gas sensible heat.It is in addition, high after exchanging heat
Warm purified gas is inputted from pyrolysis installation bottom, and by being pyrolyzed pelletizing bed, the heating of radiant tube single side radiation is become into two-sided convection current
Heat transfer, improves pyrolysis efficiency.Moreover, raw coke oven gas is passed through pyrolysis installation after first passing through purification, raw coke oven gas direct reuse can be avoided
The tar brought separates out and line clogging problem.
Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, other differences can also be made on the basis of the above description
The change or variation of form.There is no necessity and possibility to exhaust all the enbodiments.And thus amplify out aobvious and
Among the change or variation being clear to are still in the scope of protection of the utility model.
Claims (7)
1. a kind of system for producing calcium carbide, it is characterised in that including powder raw material forming unit, ball material pyrolysis unit, raw coke oven gas point
Unit is smelted from unit and calcium carbide；
The powder raw material forming unit includes mixing device and press ball device；
The mixing device is provided with fine coal entrance, quick lime entrance, binding agent entrance and batch mixing outlet；
The press ball device is provided with batch mixing entrance and pelletizing exports, and the batch mixing of the batch mixing entrance and the mixing device exports phase
Even；
The ball material pyrolysis unit is provided with pelletizing entrance, purified gas entrance, raw coke oven gas outlet and the outlet of high temperature active pelletizing, described
Pelletizing entrance is connected with the pelletizing outlet of the press ball device；
The raw coke oven gas separative element includes Other heat exchange devices and water spray system；
It is net that the Other heat exchange devices are provided with high temperature raw coke oven gas entrance, low temperature purified gas entrance, the outlet of low temperature raw coke oven gas and high temperature
Gas exit, the high temperature raw coke oven gas entrance are connected with the raw coke oven gas outlet of the ball material pyrolysis unit, the high temperature purified gas
Outlet is connected with the purified gas entrance of the ball material pyrolysis unit；
The water spray system is provided with low temperature raw coke oven gas entrance, cooling water inlet, low temperature purified gas exports, light oil exports, water goes out
Mouth and heavy oil outlet, the low temperature raw coke oven gas entrance is connected with the low temperature raw coke oven gas outlet of the Other heat exchange devices, described low
Warm purified gas outlet is connected with the low temperature purified gas entrance of the Other heat exchange devices；
The calcium carbide smelts unit and is provided with high temperature active pelletizing entrance, calcium carbide furnace gas outlet and calcium carbide outlet, the high temperature active
Pelletizing entrance is connected with the high temperature active pelletizing outlet of the ball material pyrolysis unit.
2. system for producing calcium carbide according to claim 1, it is characterised in that the device of the ball material pyrolysis unit is preheating
Stove, the preheating furnace are internally provided with horizontal rotation flitch, and body of heater is divided into upper furnace and lower hearth by the horizontal rotation flitch.
3. system for producing calcium carbide according to claim 2, it is characterised in that the heater of the preheating furnace is heat accumulating type
Radiant tube, the heat accumulation type radiant tube is positioned at the top of the horizontal rotation flitch, and along parallel point of the surrounding of the preheating furnace
Cloth.
4. system for producing calcium carbide according to claim 2, it is characterised in that the lower hearth is internal between closed make somebody a mere figurehead
It is provided with gas distributor；The horizontal rotation flitch is provided with material hole, and the purified gas entrance is arranged on the lower hearth
In side wall.
5. system for producing calcium carbide according to claim 1, it is characterised in that be provided with cooling water pipe in the water spray system
Road, one end of the cooling water pipeline is the cooling water inlet, and the cooling water pipeline is provided with multiple staggered sprays
Mouth.
6. system for producing calcium carbide according to claim 5, it is characterised in that be provided with baffle plate, institute in the water spray system
State baffle plate to be mutually perpendicular to the cooling water pipeline other end, the bottom of the baffle plate is located under low temperature purified gas outlet
Side.
7. system for producing calcium carbide according to claim 1, it is characterised in that the high temperature active pelletizing entrance and the ball
The high temperature active pelletizing outlet of material pyrolysis unit is connected by sealed thermal insulating conveying device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720847465.XU CN207192802U (en) | 2017-07-12 | 2017-07-12 | A kind of system for producing calcium carbide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720847465.XU CN207192802U (en) | 2017-07-12 | 2017-07-12 | A kind of system for producing calcium carbide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207192802U true CN207192802U (en) | 2018-04-06 |
Family
ID=61784526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720847465.XU Expired - Fee Related CN207192802U (en) | 2017-07-12 | 2017-07-12 | A kind of system for producing calcium carbide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207192802U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911898A (en) * | 2019-03-22 | 2019-06-21 | 天津大学 | A kind of energy-saving coal-coke-electricity classification substitution calcium carbide production equipment |
| CN111889056A (en) * | 2020-08-03 | 2020-11-06 | 博尔滋曼新能源科技(上海)有限公司 | Mixing reaction device and method for atomized water and calcium oxide particles |
-
2017
- 2017-07-12 CN CN201720847465.XU patent/CN207192802U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109911898A (en) * | 2019-03-22 | 2019-06-21 | 天津大学 | A kind of energy-saving coal-coke-electricity classification substitution calcium carbide production equipment |
| CN109911898B (en) * | 2019-03-22 | 2024-04-30 | 天津大学 | Energy-saving briquette-coke-electric grading production device for replacing calcium carbide |
| CN111889056A (en) * | 2020-08-03 | 2020-11-06 | 博尔滋曼新能源科技(上海)有限公司 | Mixing reaction device and method for atomized water and calcium oxide particles |
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Granted publication date: 20180406 Termination date: 20190712 |