CN104261700A - Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime - Google Patents
Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime Download PDFInfo
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- CN104261700A CN104261700A CN201410559938.7A CN201410559938A CN104261700A CN 104261700 A CN104261700 A CN 104261700A CN 201410559938 A CN201410559938 A CN 201410559938A CN 104261700 A CN104261700 A CN 104261700A
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- dry ice
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- radiant heat
- gas
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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
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- Processing Of Solid Wastes (AREA)
Abstract
The invention provides a device and a method for manufacturing dry ice by utilizing radiant heat to produce dry ice. The device and the method are applied to lime stones with small particle size of 20-40 mm in mine production. Roasting is carried out through heat transferred through radiation by a combustion chamber in a roasting chamber, the roasted lime stones are decomposed into calcium oxide and carbon dioxide, the calcium oxide is cooled, discharged out through an ash discharging device and fed into an ash bin for storage, the carbon dioxide passes through a drying device, a pressure device, a carbon dioxide liquefying plant and a dry ice device through connected waste gas pipelines to generate dry ice, after coal gas or powdered coal in the combustion chamber is combusted, the coal gas or powdered coal is discharged out through a fan for waste heat recovery and are discharged through a chimney. Active lime with higher quality can be obtained, pure carbon dioxide can be effectively recycled and is processed and manufactured into food grade dry ice, and meanwhile waste heat can be recycled for secondary use, so that a new way with larger market prospect is developed for the production of active lime and comprehensive application of resources in our country.
Description
Technical field
The present invention relates to metallurgy, chemical technology field, especially metallurgy industry production high-performance quickened lime, utilize waste gas to produce the device and method 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 technical scheme provided by the invention is:
A kind of indirect utilization radiant heat calcined limestone is provided to produce the device and method of carbonic acid gas manufacture dry ice and quickened lime.
To achieve these goals, present invention employs 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 invention, 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 invention, 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 invention, 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 invention, 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 invention, the fuel of described combustion chamber is coal dust and/or coal gas.
Another aspect of the present invention, described insulated wall is steel alloy or fires fiery material and make.
Another aspect of the present invention, 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.
Utilize radiant heat to produce a method for quickened lime making dry ice, wherein, comprise the steps:
Step 1, provides a heating source;
Step 2, the Wingdale that the radiations heat energy preheating utilizing described heating source to produce, calcining are positioned in the cavity of isolating with described heating source produces lime;
Step 3, collects the carbonic acid gas that the Wingdale in calcining cavity produces;
Step 4, by the purifying carbon dioxide of collection, drying, pressurized liquefied and make dry ice.
By the enforcement to technical solution of the present invention, 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 invention;
Fig. 2 is the FB(flow block) utilizing radiant heat to produce the method for quickened lime making dry ice of the present invention.
Embodiment
Be described technical scheme of the present invention below by way of specific embodiment, with under the conflict free prerequisite of goal of the invention of the present invention, the technical characteristic in the embodiment hereinafter mentioned and embodiment can combine mutually.
As shown in Figure 1, the technical solution adopted in the present invention 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 invention 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.
Embodiment of the present invention 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 invention, insulated wall 9 can adopt steel alloy or fire-resistant heat-transfer matcrial to make.
Be not difficult to find, the present invention 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.
Also comprise a kind of method utilizing radiant heat to produce quickened lime making dry ice in technical scheme of the present invention, wherein, as shown in Figure 2, comprise the steps:
Step 1, provides a heating source;
Step 2, the Wingdale that the radiations heat energy preheating utilizing heating source to produce, calcining are positioned in the cavity of isolating with heating source produces lime;
Step 3, collects the carbonic acid gas that the Wingdale in calcining cavity produces;
Step 4, by the purifying carbon dioxide of collection, drying, pressurized liquefied and make dry ice.
The above embodiments are only that part of the present invention embodies; can not contain all of the present invention; 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 scope of the present invention.
Claims (9)
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.
9. utilize radiant heat to produce a method for quickened lime making dry ice, it is characterized in that, comprise the steps:
Step 1, provides a heating source;
Step 2, the Wingdale that the radiations heat energy preheating utilizing described heating source to produce, calcining are positioned in the cavity of isolating with described heating source produces lime;
Step 3, collects the carbonic acid gas that the Wingdale in calcining cavity produces;
Step 4, by the purifying carbon dioxide of collection, drying, pressurized liquefied and make dry ice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410559938.7A CN104261700A (en) | 2014-10-20 | 2014-10-20 | Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410559938.7A CN104261700A (en) | 2014-10-20 | 2014-10-20 | Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime |
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| Publication Number | Publication Date |
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| CN104261700A true CN104261700A (en) | 2015-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410559938.7A Pending CN104261700A (en) | 2014-10-20 | 2014-10-20 | Device and method for manufacturing dry ice by utilizing radiant heat to produce active lime |
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| CN (1) | CN104261700A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105039744A (en) * | 2015-07-28 | 2015-11-11 | 宋开泉 | Method for preparing solid carbon dioxide and calcium metal through calcite |
| CN105271841A (en) * | 2015-04-10 | 2016-01-27 | 李正福 | Rotary kiln device and method for constant temperature indirect calcination of limestone |
| CN105314894A (en) * | 2015-02-03 | 2016-02-10 | 李正福 | Rotary kiln device and method for indirectly producing lime and recycling carbon dioxide |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045736U (en) * | 1989-03-15 | 1989-10-11 | 于洪喜 | Carbon dioxide generator |
| CN2199205Y (en) * | 1994-07-06 | 1995-05-31 | 冶金工业部武汉钢铁设计研究院 | Indirect heating calciner for active lime |
| JP2004231424A (en) * | 2003-01-28 | 2004-08-19 | Aienji:Kk | Indirect heating type lime kiln |
| CN201643890U (en) * | 2010-04-01 | 2010-11-24 | 任世伟 | Lime kiln waste gas recovering device |
| CN202281517U (en) * | 2011-10-31 | 2012-06-20 | 日照海大自动化科技有限公司 | Waste gas treatment system of lime kiln |
| CN103979806A (en) * | 2014-05-13 | 2014-08-13 | 石家庄共创环保科技有限公司 | Carbon dioxide recovery chamber type lime shaft furnace |
| CN104058608A (en) * | 2014-06-15 | 2014-09-24 | 石家庄新华能源环保科技股份有限公司 | Shaft kiln capable of heating material through dividing wall |
| CN204174107U (en) * | 2014-10-20 | 2015-02-25 | 李正福 | A kind of device utilizing radiant heat to produce quickened lime making dry ice |
-
2014
- 2014-10-20 CN CN201410559938.7A patent/CN104261700A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2045736U (en) * | 1989-03-15 | 1989-10-11 | 于洪喜 | Carbon dioxide generator |
| CN2199205Y (en) * | 1994-07-06 | 1995-05-31 | 冶金工业部武汉钢铁设计研究院 | Indirect heating calciner for active lime |
| JP2004231424A (en) * | 2003-01-28 | 2004-08-19 | Aienji:Kk | Indirect heating type lime kiln |
| CN201643890U (en) * | 2010-04-01 | 2010-11-24 | 任世伟 | Lime kiln waste gas recovering device |
| CN202281517U (en) * | 2011-10-31 | 2012-06-20 | 日照海大自动化科技有限公司 | Waste gas treatment system of lime kiln |
| CN103979806A (en) * | 2014-05-13 | 2014-08-13 | 石家庄共创环保科技有限公司 | Carbon dioxide recovery chamber type lime shaft furnace |
| CN104058608A (en) * | 2014-06-15 | 2014-09-24 | 石家庄新华能源环保科技股份有限公司 | Shaft kiln capable of heating material through dividing wall |
| CN204174107U (en) * | 2014-10-20 | 2015-02-25 | 李正福 | A kind of device utilizing radiant heat to produce quickened lime making dry ice |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105314894A (en) * | 2015-02-03 | 2016-02-10 | 李正福 | Rotary kiln device and method for indirectly producing lime and recycling carbon dioxide |
| CN105271841A (en) * | 2015-04-10 | 2016-01-27 | 李正福 | Rotary kiln device and method for constant temperature indirect calcination of limestone |
| CN105039744A (en) * | 2015-07-28 | 2015-11-11 | 宋开泉 | Method for preparing solid carbon dioxide and calcium metal through calcite |
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Application publication date: 20150107 |