CN204174107U - A kind of device utilizing radiant heat to produce quickened lime making dry ice - Google Patents
A kind of device utilizing radiant heat to produce quickened lime making dry ice Download PDFInfo
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- CN204174107U CN204174107U CN201420606740.5U CN201420606740U CN204174107U CN 204174107 U CN204174107 U CN 204174107U CN 201420606740 U CN201420606740 U CN 201420606740U CN 204174107 U CN204174107 U CN 204174107U
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- dry ice
- combustion chamber
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- radiant heat
- quickened lime
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Abstract
The utility model provides a kind of device utilizing Wingdale lime kilning to produce dry ice, for the 20mm-40mm small grain size Wingdale by mining production.The utility model is carrying out calcination by combustion chamber by the heat of radiation delivery by calcination, decomposition of limestone after calcination is calcium oxide and carbonic acid gas, calcium oxide enters ash silo storage by being discharged by ash discharging gear after cooling, carbonic acid gas produces dry ice by exhaust pipeline drying device, pressurizing device, carbon dioxide liquid gasifying device and the dry ice device connected, in combustion chamber after coal gas or coal dust firing, after carrying out waste heat recovery by blower fan discharge, through smoke stack emission.The utility model not only can obtain the quickened lime of higher quality, and the carbonic acid gas that energy efficient recovery is pure, processing and manufacturing is food grade dry ice, waste heat recovery secondary can be used, for the production of domestic quickened lime and the integrated application of resource open the new a kind of approach more having market outlook simultaneously.
Description
Technical field
The utility model relates to metallurgy, chemical technology field, especially metallurgy industry production high-performance quickened lime, utilizes waste gas to produce the device of dry ice.
Background technology
Copenhagen climate change investigation in 2009, makes low-carbon economy become global focus.The Economic Development Mode of low-carbon economy based on less energy-consumption, low stain, low emission, it is the fundamental change of the mode of production to a large amount of fossil energy of existing consumption, a large amount of discharge carbonic acid gas, the Chinese government promises to undertake the year two thousand twenty, the CO2 emissions of per GDP than decline 40-45% in 2005, and is included into national economy and social development medium-term and long-term plans as the binding indicator.
Carbonic acid gas is as a kind of important resource, of many uses, and simultaneously the discharge of carbonic acid gas is also the one of the main reasons causing Global warming, and reclaiming carbonic acid gas so effective both can saving resource, also can reduce topsoil and Greenhouse effect.
For metallurgy industry, lime is the slag making materials of alkalescence steel-making.Main component is CaO.It is desulfurization, dephosphorization, deoxidation raising molten steel purity and the indispensable material one of minimizing thermosteresis.For making lime rapid melting, rapid slagging, lime should have higher response capacity.The domestic and international main kiln type for calcination particulate lime is the co-current heat accumulated kiln with double shafts built of Switzerland Maers Kiln stove company designs and rotary kiln etc. at present, this type of kiln is used for calcination 20-40 mm small grain size Wingdale, the many bird's eye gravel lime stones abandoned of current China limestone mine can be made full use of, coal gas calcination together with Wingdale is adopted to produce quickened lime, for the comprehensive utilization of resources of China's limestone mine opens new way.For MAERZ lime kiln, rotary system investment is high, equipment is complicated, troublesome maintenance, more importantly construction cost is high, finished product ton ash cost is higher, ben is contain residual coal gas owing to decomposing the carbonic acid gas produced, the carbonic acid gas of discharge cannot be reclaimed, the high-temperature flue gas that burning produces is due to containing a large amount of dust, cannot reclaim and can only discharge, pollute environment and energy dissipation.Do not want to adapt to the recycling economy of national requirements, energy-saving and emission-reduction.
And the gas that the manufacture of current domestic dry ice is mainly produced by petrochemical industry obtains carbonic acid gas after passing through purification and catalyzed oxidation, then through removing objectionable impurities, cooling, pressurization are produced into liquid carbon dioxide, manufacture dry ice by dry ice device.The method is from raw materials cost or production run cost is all higher.
Summary of the invention
For the problems referred to above that existing lime and dry ice production exist, the main purpose of the technical scheme that the utility model provides is:
A kind of indirect utilization radiant heat calcined limestone is provided to produce the device of carbonic acid gas manufacture dry ice and quickened lime.
To achieve these goals, the utility model have employed following technical scheme:
Utilize radiant heat to produce a device for quickened lime making dry ice, wherein, comprising:
A plurality of combustion chamber;
Be arranged at a plurality of material roads between a plurality of described combustion chamber, treat calcined limestone in order to place, and separated by insulated wall and described combustion chamber;
Effuser, connects a plurality of described material road, in order to gather the gas calcining generation in a plurality of material road;
Dry ice device, is connected with described effuser, makes dry ice in order to the described gas gathered by described effuser.
Another aspect of the present utility model, also comprises the preheating chamber be arranged at above described combustion chamber, and is arranged at the cooling room below described combustion chamber, and described preheating chamber is by cavity and described combustion chamber UNICOM, and described cooling room is not communicated with described combustion chamber.
Another aspect of the present utility model, also comprises exhaust pipeline and waste heat boiler, and described exhaust pipeline is connected to gather the waste gas with heat that a plurality of combustion chamber produces with a plurality of described combustion chamber, and described waste gas is passed to described waste heat boiler.
Another aspect of the present utility model, is provided with the belt transporting Wingdale, described belt is provided with a dumping device above described material road, in order to the discharge opening unloading Wingdale to top, described material road, described discharge opening is provided with closed cover plate.
Another aspect of the present utility model, is provided with the grey machine that shakes bottom each described material road, drops down onto on a finished product ash belt in order to be shaken by described material road by the lime of calcining generation.
Another aspect of the present utility model, the fuel of described combustion chamber is coal dust and/or coal gas.
Another aspect of the present utility model, described insulated wall is steel alloy or fires fiery material and make.
Another aspect of the present utility model, is also sequentially set with the refining plant in order to Purge gas between described effuser and described dry ice device, in order to the drying installation of dry gas, and in order to the pressurizing device by liquefaction of gases.
By the enforcement to technical solutions of the utility model, following technique effect can be obtained:
1, quality product is high, and product purity improves, and is particularly suitable for the interpolation slag making of smelting stainless steel and high strength, high-quality iron and steel kind;
2, calcination of lime is even, is easy to control, and activity degree is good.Under the prerequisite supplying qualified Wingdale and fuel, the activity degree of quickened lime reaches 360m1, and normal production does not produce Extend position;
3, thermo-efficiency is high, decomposition temperature is easy to control, avoid energy dissipation, the per-cent accounting for total heat consumption for decomposition of limestone thermal losses is the highest in all kinds of kiln shape, unit product thermal losses is low, and can make full use of coal dust firing, or blast furnace, converter, coke oven and mixed gas carry out calcination as fuel;
4, compare rotary kiln, floor space is little, and initial cost is low;
The flue gas temperature of 5, discharging is high, and recoverable, is converted to steam and generates electricity;
The carbonic acid gas of 6, discharging is easy to purification, obtains pure carbonic acid gas, obtains food grade dry ice through processing treatment, industrial wastes is utilized effectively, and is conducive to solving problem of environmental pollution;
7, can calcination 20-40mm small grain size Wingdale, the existing discarded limestone resource of China can be made full use of.
8, contrast other rotary kiln type, the active kiln of novel indirect utilization radiant heat calcination, whole system equipment is simple, processing ease, and easy to maintenance, cost is lower, and environmental protection, meets recycling economy.
Accompanying drawing explanation
Fig. 1 is the structural representation utilizing radiant heat to produce the device of quickened lime making dry ice of the present utility model.
Embodiment
Be described the technical solution of the utility model below by way of specific embodiment, with under the conflict free prerequisite of utility model object of the present utility model, the technical characteristic in the embodiment hereinafter mentioned and embodiment can combine mutually.
As shown in Figure 1, the technical scheme that the utility model adopts is: utilize coal dust or coal gas to produce heat by heat transfer wall 9 in combustion chamber 5 combustion, make Wingdale be heated to 1000-1050 degree decomposition temperature and carry out indirect calcination, produce qualified high-performance quickened lime and pure carbonic acid gas, waste gas residual heat produces steam and is recycled utilization.
A kind of embodiment utilizing radiant heat to produce the device of quickened lime making dry ice of the present utility model comprises: a plurality of combustion chamber 5, be arranged at a plurality of material roads 6 between a plurality of combustion chamber 5, treat calcined limestone in order to place, and separated by insulated wall 9 and combustion chamber 5; Effuser 14, connects a plurality of material road 6, in order to gather the gas calcining generation in a plurality of material road 6; Dry ice device 23, is connected with effuser 14, makes dry ice in order to the gas gathered by effuser 14.
The utility model embodiment relates to the method utilizing radiant heat lime kilning stone to produce carbonic acid gas making dry ice, as schemed shown in I, mainly comprising feed bin 1 sodalime stone is transported on lime silo by belt 2, Wingdale adds in material road 6 by discharge opening 4 by feed bin 1 loading and unloading material device 3, discharge opening 4 there is cover plate, opened by dump car when discharging, close after discharging.Gas line 7 or breeze blowing pipeline 7 are connected with each combustion chamber 5 by firelock 8, heat is delivered in material road 6 by heat transfer wall 9 by the heat that combustion chamber 5 produces, during by falling into material road 6 when Wingdale, the heat produced after top Wingdale is burnt by combustion chamber 5 enters preheating chamber 25, Wingdale preheating is carried out by heat transfer wall 9, fast decoupled is carried out when the Wingdale after preheating arrives calcination band, the material road cooling zone 13 entering cooling room 26 correspondence after decomposition cools, enter material road finished bin 11 afterwards and wait for that the finished product cooled in Ge Liao road ash is delivered continuously to lime finished bin 24 by finished product ash belt 10 by vibration ash hoist 12 in order, the waste gas that combustion chamber 5 produces is connected with exhaust blower 16 by exhaust pipeline 15, give waste heat boiler 17, the steam that waste heat boiler 17 produces gives steam pockets 18, steam pockets 18 Song Quan factory steam pipe system is for full factory or carry out cogeneration.
The effuser 14 of carbonic acid gas by connecting that Ge Liao road 6 calcination is decomposed, enter blower fan 19 to give refining plant 20 and carry out purifying treatment, enter drying installation 21 afterwards and carry out drying treatment, by pressurizing device 22, carbon dioxide condensing is become liquid after drying treatment, dry ice device 23 under low pressure evaporates rapidly, condenses into the ice and snow shape solid matter formation dry ice that one piece of block compresses.
It should be noted that in above-mentioned embodiment, every bar charging belt and ash discharge belt have 4 stoves, and every stove has 9 Ge Liao roads, and certainly, material road and stove quantity can carry out composite design according to actual production.
In a kind of embodiment of the present utility model, insulated wall 9 can adopt steel alloy or fire-resistant heat-transfer matcrial to make.
Be not difficult to find, the utility model is by utilizing radiant heat calcination quickened lime, separate completely isolated between combustion chamber and calcination, not only can obtain the quickened lime of higher quality, and pure carbonic acid gas can be recovered to, processing and manufacturing is food grade dry ice, and the high-temp waste gas that burning produces also can direct remanufacture steam, carries out secondary use.Avoid Wingdale to contact with coal dust, the direct of coal gas compared with other lime kilning cubic meter of stone methods, make quickened lime, carbonic acid gas cleaner, lower containing impurity such as S, P, for the production of domestic quickened lime, dry ice and the integrated application of resource open the new a kind of approach more having market outlook, really respond national policy, achieve recycling economy and energy-saving and emission-reduction.
The above embodiments are only that part of the present utility model embodies; can not contain all of the present utility model; on the basis of above-described embodiment and accompanying drawing; those skilled in the art can obtain more embodiment under the prerequisite not paying creative work, and therefore these embodiments obtained under not paying the prerequisite of creative work all should be included in protection domain of the present utility model.
Claims (8)
1. utilize radiant heat to produce a device for quickened lime making dry ice, it is characterized in that, comprising:
A plurality of combustion chamber;
Be arranged at a plurality of material roads between a plurality of described combustion chamber, treat calcined limestone in order to place, and separated by insulated wall and described combustion chamber;
Effuser, connects a plurality of described material road, in order to gather the gas calcining generation in a plurality of material road;
Dry ice device, is connected with described effuser, makes dry ice in order to the described gas gathered by described effuser.
2. utilize radiant heat to produce the device of quickened lime making dry ice as claimed in claim 1, it is characterized in that, also comprise the preheating chamber be arranged at above described combustion chamber, and the cooling room be arranged at below described combustion chamber, described preheating chamber is by cavity and described combustion chamber UNICOM, and described cooling room is not communicated with described combustion chamber.
3. utilize radiant heat to produce the device of quickened lime making dry ice as claimed in claim 1, it is characterized in that, also comprise exhaust pipeline and waste heat boiler, described exhaust pipeline is connected to gather the waste gas with heat that a plurality of combustion chamber produces with a plurality of described combustion chamber, and described waste gas is passed to described waste heat boiler.
4. utilize radiant heat to produce the device of quickened lime making dry ice as claimed in claim 1, it is characterized in that, the belt transporting Wingdale is provided with above described material road, described belt is provided with a dumping device, in order to the discharge opening unloading Wingdale to top, described material road, described discharge opening is provided with closed cover plate.
5. utilize radiant heat to produce the device of quickened lime making dry ice as claimed in claim 1, it is characterized in that, bottom each described material road, be provided with the grey machine that shakes, drop down onto on a finished product ash belt in order to the lime of calcining generation is shaken by described material road.
6. utilize radiant heat to produce the device of quickened lime making dry ice as claimed in claim 1, it is characterized in that, the fuel of described combustion chamber is coal dust and/or coal gas.
7. utilize radiant heat to produce the device of quickened lime making dry ice as claimed in claim 1, it is characterized in that, described insulated wall is that steel alloy or fire-resistant heat-transfer matcrial are made.
8. utilize radiant heat to produce the device of quickened lime making dry ice as claimed in claim 1, it is characterized in that, the refining plant in order to Purge gas is also sequentially set with between described effuser and described dry ice device, in order to the drying installation of dry gas, and in order to the pressurizing device by liquefaction of gases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420606740.5U CN204174107U (en) | 2014-10-20 | 2014-10-20 | A kind of device utilizing radiant heat to produce quickened lime making dry ice |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420606740.5U CN204174107U (en) | 2014-10-20 | 2014-10-20 | A kind of device utilizing radiant heat to produce quickened lime making dry ice |
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| CN204174107U true CN204174107U (en) | 2015-02-25 |
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| CN201420606740.5U Active CN204174107U (en) | 2014-10-20 | 2014-10-20 | A kind of device utilizing radiant heat to produce quickened lime making dry ice |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261700A (en) * | 2014-10-20 | 2015-01-07 | 李正福 | Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime |
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2014
- 2014-10-20 CN CN201420606740.5U patent/CN204174107U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261700A (en) * | 2014-10-20 | 2015-01-07 | 李正福 | Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |