CN104006664B - A kind of tekite sand residual heat integrative utilizes change system - Google Patents
A kind of tekite sand residual heat integrative utilizes change system Download PDFInfo
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- CN104006664B CN104006664B CN201310060971.0A CN201310060971A CN104006664B CN 104006664 B CN104006664 B CN 104006664B CN 201310060971 A CN201310060971 A CN 201310060971A CN 104006664 B CN104006664 B CN 104006664B
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Abstract
In order to improve utilization rate of waste heat in quartz sand smelting technology process and production efficiency, avoid the potential safety hazard that production process exists, improve the quality of vitreous silica, the present invention proposes a kind of utilization for tekite sand residual heat integrative to equip, comprise thermal energy exchange room, washing quartz mine transmission system and fused quartz melt body transmission system, washing quartz mine transmission system and fused quartz melt body transmission system are respectively through the upper and lower of thermal energy exchange indoor, blower fan is set below thermal energy exchange chamber interior, hydrothermal exchange pipeline is set in thermal energy exchange chamber interior walls.The present invention effectively can to avoid in quartzy melting production technology the dependence of natural weather, enhances productivity, improves heat utilization rate, improve production security, reduce the production cost of vitreous silica, patent of the present invention also can be applicable to the melting of every other ore or smelts the transformation of system in production.
Description
Technical field
The present invention relates to a kind of tekite sand residual heat integrative and utilize change system.
Background technology
Quartz sand and quartzy tcrude ore particle.The current basic technology route to quartz sand melting: first carry out pickling and washing to quartz sand, then natural drying and except fine powder impurity, then in smelting furnace, carry out high-temperature fusion, last molten mass cools in the open naturally.With regard to current technology (accompanying drawing 1), mainly there is the deficiency of the following aspects:
The first, in natural drying process, how to spread out on the ground, utilize the mode of natural air drying and sun airing, the moisture in removing water-washing process.This just exists the great dependence of natural weather, runs into and rains in torrents suddenly or shower, usually makes that all that has been achieved is spoiled.
The second, carry out airing on the ground, return quartz mine and introduce impurity tiny on ground.Therefore, in existing technique, total operation that there is " except fine powder impurity ".This not only makes production efficiency reduce, and also adds additional equipment investment and energy resource consumption.
3rd, after high melt completes, usually fused quartz melt body is placed in outdoor air and carries out nature cooling.There is again the problem of 3 aspects in this: (1) molten mass cool time long (36 hours winters, 72 hours summers), and efficiency is not high; (2) waste heat waste is serious; (3) high temperature melting melt body is placed in outdoor, there is potential safety hazard.
Summary of the invention
The object of the invention is to provide a kind of tekite sand residual heat integrative and utilizes equipment, can effectively solve the problems referred to above existed in existing technology.
In order to improve utilization rate of waste heat in quartz sand smelting technology process and production efficiency, avoid the potential safety hazard that production process exists, improve the quality of vitreous silica, the present invention proposes a kind of utilization for tekite sand residual heat integrative to equip, comprise thermal energy exchange room, washing quartz mine transmission system and fused quartz melt body transmission system, washing quartz mine transmission system and fused quartz melt body transmission system are respectively through the upper and lower of thermal energy exchange indoor, blower fan is set below thermal energy exchange chamber interior, hydrothermal exchange pipeline is set in thermal energy exchange chamber interior walls.
Described fused quartz melt body transmission system is by transmitting power and control system, carrying platform and guide rail form.
Described washing quartz mine transmission system is made up of crawler type transport tape, transmission power and control system.
Described thermal energy exchange chamber liner heat-resistant insulation material.
Described heat-resistant insulation material material can adopt refractory brick or asbestos.
The preferred 2-4 bar of described crawler type transport tape number.
The present invention proposes a kind of for the energy recovery in quartz sand fusion process and comprehensive utilization process technology, form primarily of following link:
The first step, the transfer of high quartz molten mass: utilize fused quartz melt body transmission system that high quartz molten mass is transported to thermal energy exchange room, when arriving fused quartz melt temperature lower than 500 DEG C after entering thermal energy exchange room, then fused quartz melt body is transferred out thermal energy exchange room.
Second step, the conveying of washing quartz mine: utilize washing quartz mine transmission system, carry with the moving direction that 0.01-0.1 meter per second is contrary with fused quartz melt body and wash quartz mine.
3rd step, high quartz molten mass and the heat exchange of washing quartz mine: utilize blower fan by the carry heat of high quartz molten mass to washing quartz mine, make the rapid draing of washing quartz mine, and be heated to higher temperature, also accelerate the cooling of fused quartz melt body simultaneously.
4th step, the utilization of hot water or steam: at thermal energy exchange indoor layout hydrothermal exchange pipeline, water flow in pipeline amount is 1-5L/ second, tap water at normal temperature is made to form hot water or steam by heat exchange, hot water or steam is utilized to clean quartz mine, better than normal-temperature water cleaning performance, be more conducive to the eccysis of impurity; Meanwhile, the more easily dry and preheating of the quartz mine after hot water cleaning.
Fused quartz melt body mode of movement described in the first step can adopt continuously or intermittent mode.
Compared with prior art, the present invention effectively can to avoid in quartzy melting production technology the dependence of natural weather, enhances productivity, improves heat utilization rate, improve production security, reduce the production cost of vitreous silica, patent of the present invention also can be applicable to the melting of every other ore or smelts the transformation of system in production.
Accompanying drawing explanation
Fig. 1 is conventional quartz smelting process route map.
Fig. 2 is fused quartz melt process route chart of the present invention.
Fig. 3 is that tekite sand residual heat integrative of the present invention utilizes equipment configuration schematic diagram.
Detailed description of the invention
The present invention is further illustrated below by embodiment and comparative example.In the following Examples and Comparative Examples, the temperature of adding the quartz mine in melting furnace to is higher, amount is the bigger the better, and is especially guaranteeing under certain output condition, as well higher with the temperature that quartz mine is preheated.
Tekite sand residual heat integrative of the present invention utilizes equipment configuration schematic diagram as shown in Figure 3: washing quartz mine transmission system and fused quartz melt body transmission system are respectively through the upper and lower in thermal energy exchange room 1, in thermal energy exchange room 1, lower inside arranges blower fan 3, and in thermal energy exchange room 1, inwall arranges hydrothermal exchange pipeline.
(1) quartz mine transmission system is washed.
Quartz mine after washing is directly transferred in thermal energy exchange room 1 by this washing quartz mine transmission system primary responsibility, is made up of crawler type transport tape 4, transmission power and control system.Wherein, crawler type transport tape 4 mainly plays conveying effect, and provides condition for ore sorts.According to the size relationship of crawler type transport tape 4 with inner space, thermal energy exchange room 1, general ore crawler type transport tape 4 can adopt many (being generally 2 ~ 4) side by side by thermal energy exchange room 1, to improve heat exchanger effectiveness.
(2) fused quartz melt body transmission system.
Fused quartz melt body transmission system is mainly by high quartz molten mass (1800
oabout C) from smelting furnace discharging to thermal energy exchange room, and finally move to hand breaking and select workshop, forming primarily of transmission power and control system, carrying platform 2 and guide rail.Wherein, movement and the transmission of power and control system major control fused quartz melt body is transmitted; Carrying platform 2 primary responsibility carrying fused quartz melt body, is made up of wheel and strong thermo-resistant material platform; Guide rail mainly guides the movement of carrying platform 2.
(3) thermal energy exchange room.
Thermal energy exchange room 1 is a liner heat-resistant insulation material and relatively airtight long and narrow tunnel space, mainly realizes being exchanged by the waste heat of high quartz molten mass to washing quartz mine, makes its rapid draing and is preheated to higher temperature.The latter half in thermal energy exchange room 1 drives fused quartz melt body carrying platform 2 to pass through for guide rail, its first half for washing quartz mine crawler type transport tape 4 in opposite directions through.Both sides in thermal energy exchange room 1, are provided with multiple stage blower fan 3, make the heat energy of fused quartz melt body pass to the washing quartz mine of top fast.Meanwhile, in thermal energy exchange room 1, be also furnished with hydrothermal exchange pipeline, can be workshop and hot water or steam are provided.
embodiment 1
By 3 ~ 5 oven-fresh fused quartz melt bodies, (infrared thermometer test is 1800-1850
oc), discharging is on carrying platform 2 respectively, each carrying platform 2(fused quartz melt body on guide rail) about 2.0 meters, interval, driven by transmission power and control system and successively move to thermal energy exchange room 1.In thermal energy exchange room 1, carrying platform 2 translational speed controls 1 m/h (the fused quartz melt temperature now shifting out thermal energy exchange room 1 controls at 500 DEG C).When discharge in the interior conduit of thermal energy exchange room 1 is 5L/ second, for cleaning hot water temperature's Absorbable organic halogens of quartz mine 70
oabout C.Utilize from heat energy switch room 1 hot water out, perform the water-washing process to ore, completing the rear ore temperature of washing is 50
oabout C.Open the crawler type transport tape 4 of 3 washing quartz mines arranged side by side, and single flat spreads the ore after washing on transport tape, controls transfer band movement velocity is 0.01 meter per second (36 ms/h), and washing quartz mine direction of transfer is contrary with molten mass moving direction.
After tested and calculate, be 310-320 by the ore temperature after heat exchange
oc(average 315
oc), on transport tape, individual layer ore weight is about 10kg/m, and total conveying capacity of 3 transport tapes is about 1080kg/ hour.
With regard to saving waste heat, (by room temperature 25 compared with conventional method
othe ore of C is directly heated to melting, supposes that the thermal capacitance of quartz is 0.8kJ/ (kgK)), the method can save waste heat (unit hour):
(315-25)
oc × 1080kg × 0.8kJ/ (kgK)=2.51 × 10
5kJ(is roughly equal to 69.6 degree of electricity)
Be converted into waste heat efficiency 95% according to electric power to calculate, per hourly save electric power 73.3 degree of electricity.
embodiment 2
By 3 ~ 5 oven-fresh fused quartz melt bodies, (infrared thermometer test is 1800-1850
oc), discharging is on carrying platform 2 respectively, each carrying platform 2(fused quartz melt body on guide rail) about 2.0 meters, interval, driven by transmission power and control system and successively move to thermal energy exchange room 1.In thermal energy exchange room 1, carrying platform 2 translational speed controls at 1 m/h.When discharge in the interior conduit of thermal energy exchange room 1 is 3L/ second, for cleaning hot water temperature's Absorbable organic halogens of quartz mine 80
oabout C.Utilize from heat energy switch room 1 hot water out, perform the water-washing process to ore, completing the rear ore temperature of washing is 65
oabout C.Open the crawler type transport tape 4 of 3 washing quartz mines arranged side by side, and single flat spreads the ore after washing on transport tape, controls transfer band movement velocity is 0.02 meter per second (72 ms/h), and ore direction of transfer is contrary with molten mass moving direction.
After tested and calculate, be 280-290 by the ore temperature after heat exchange
oc(average 285
oc), on transport tape, individual layer ore weight is about 10kg/m, and total conveying capacity of 3 transport tapes is about 2160kg/ hour.
With regard to saving waste heat, (by room temperature 25 compared with conventional method
othe ore of C is directly heated to melting, supposes that the thermal capacitance of quartz is 0.8kJ/ (kgK)), the method can save waste heat (unit hour):
(285-25)
oc × 2160kg × 0.8kJ/ (kgK)=4.49 × 10
5kJ(is roughly equal to 124.5 degree of electricity)
Be converted into waste heat efficiency 95% according to electric power to calculate, per hourly save electric power 131.4 degree of electricity.
embodiment 3
By 3 ~ 5 oven-fresh fused quartz melt bodies, (infrared thermometer test is 1800-1850
oc), discharging is on carrying platform 2 respectively, each carrying platform 2(fused quartz melt body on guide rail) about 2.0 meters, interval, driven by transmission power and control system and successively move to thermal energy exchange room 1.In thermal energy exchange room 1, carrying platform 2 translational speed controls at 1 m/h.When discharge in the interior conduit of thermal energy exchange room 1 is 2L/ second, for cleaning hot water temperature's Absorbable organic halogens of quartz mine 85
oabout C.Utilize from heat energy switch room 1 hot water out, perform the water-washing process to ore, completing the rear ore temperature of washing is 70
oabout C.Open the crawler type transport tape 4 of 3 washing quartz mines arranged side by side, and single flat spreads the ore after washing on transport tape, controls transfer band movement velocity is 0.05 meter per second (180 ms/h), and ore direction of transfer is contrary with molten mass moving direction.
After tested and calculate, be 190-200 by the ore temperature after heat exchange
oc(average 195
oc), on transport tape, individual layer ore weight is about 10kg/m, and total conveying capacity of 3 transport tapes is about 5400kg/ hour.
With regard to saving waste heat, (by room temperature 25 compared with conventional method
othe ore of C is directly heated to melting, supposes that the thermal capacitance of quartz is 0.8kJ/ (kgK)), the method can save waste heat (unit hour):
(195-25)
oc × 5400kg × 0.8kJ/ (kgK)=7.34 × 10
5kJ(is roughly equal to 204 degree of electricity)
Be converted into waste heat efficiency 95% according to electric power to calculate, per hourly save electric power 214.7 degree of electricity.
embodiment 4
By 3 ~ 5 oven-fresh fused quartz melt bodies, (infrared thermometer test is 1800-1850
oc), discharging is on carrying platform 2 respectively, each carrying platform 2(fused quartz melt body on guide rail) about 2.0 meters, interval, driven by transmission power and control system and successively move to thermal energy exchange room 1.In thermal energy exchange room 1, carrying platform 2 translational speed controls at 1 m/h.When discharge in the interior conduit of thermal energy exchange room 1 is 1L/ second, for cleaning hot water temperature's Absorbable organic halogens of quartz mine 90
oabout C.Utilize from heat energy switch room 1 hot water out, perform the water-washing process to ore, completing the rear ore temperature of washing is 75
oabout C.Open the crawler type transport tape 4 of 3 washing quartz mines arranged side by side, and single flat spreads the ore after washing on transport tape, controls transfer band movement velocity is 0.1 meter per second (360 ms/h), and ore direction of transfer is contrary with molten mass moving direction.
After tested and calculate, be 70-80 by the ore temperature after heat exchange
oc(average 75
oc), on transport tape, individual layer ore weight is about 10kg/m, and total conveying capacity of 3 transport tapes is about 10800kg/ hour.
With regard to saving waste heat, (by room temperature 25 compared with conventional method
othe ore of C is directly heated to melting, supposes that the thermal capacitance of quartz is 0.8kJ/ (kgK)), the method can save waste heat (unit hour):
(75-25)
oc × 10800kg × 0.8kJ/ (kgK)=4.32 × 10
5kJ(is roughly equal to 120 degree of electricity)
Be converted into waste heat efficiency 95% according to electric power to calculate, per hourly save electric power 126.3 degree of electricity.
Claims (6)
1. a tekite sand residual heat integrative utilizes change system, it is characterized in that described equipment comprises thermal energy exchange room (1), washing quartz mine transmission system and fused quartz melt body transmission system, described washing quartz mine transmission system and fused quartz melt body transmission system are respectively through the upper and lower in described thermal energy exchange room (1), blower fan (3) is set at described thermal energy exchange room (1) lower inside, hydrothermal exchange pipeline is set at described thermal energy exchange room (1) inwall.
2. tekite sand residual heat integrative according to claim 1 utilizes change system, it is characterized in that described fused quartz melt body transmission system is by transmitting power and control system, carrying platform (2) and guide rail form.
3. tekite sand residual heat integrative according to claim 1 utilizes change system, it is characterized in that described washing quartz mine transmission system is made up of crawler type transport tape (4), transmission power and control system.
4. tekite sand residual heat integrative according to claim 3 utilizes change system, it is characterized in that the preferred 2-4 bar of described crawler type transport tape (4) number.
5. tekite sand residual heat integrative according to claim 1 utilizes change system, it is characterized in that described thermal energy exchange room (1) liner heat-resistant insulation material.
6. tekite sand residual heat integrative according to claim 5 utilizes change system, it is characterized in that described heat-resistant insulation material material adopts refractory brick or asbestos.
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JPS5195901A (en) * | 1975-02-20 | 1976-08-23 | ||
JPS61246330A (en) * | 1985-04-22 | 1986-11-01 | Kawasaki Steel Corp | Method for controlling waste heat recovering device of two-pass closed system |
JP3869751B2 (en) * | 2001-05-03 | 2007-01-17 | エルヴェーエー・パワー・アクチエンゲゼルシヤフト | A method of using waste heat generated during pig iron production in a rotary open hearth |
CN101118125A (en) * | 2007-09-14 | 2008-02-06 | 昆明阳光基业股份有限公司 | Smelting sintered ring-cold heat-recovering generating plant and method thereof |
CN101344359A (en) * | 2008-08-20 | 2009-01-14 | 首钢总公司 | Sintered ring cold exhaust heat stepped recovery power generation system and technique |
CN102679667A (en) * | 2012-05-11 | 2012-09-19 | 山东邹平嘉鑫粉体科技有限公司 | High-temperature quartz sand cooling and after heat recovery device |
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Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5195901A (en) * | 1975-02-20 | 1976-08-23 | ||
JPS61246330A (en) * | 1985-04-22 | 1986-11-01 | Kawasaki Steel Corp | Method for controlling waste heat recovering device of two-pass closed system |
JP3869751B2 (en) * | 2001-05-03 | 2007-01-17 | エルヴェーエー・パワー・アクチエンゲゼルシヤフト | A method of using waste heat generated during pig iron production in a rotary open hearth |
CN101118125A (en) * | 2007-09-14 | 2008-02-06 | 昆明阳光基业股份有限公司 | Smelting sintered ring-cold heat-recovering generating plant and method thereof |
CN101344359A (en) * | 2008-08-20 | 2009-01-14 | 首钢总公司 | Sintered ring cold exhaust heat stepped recovery power generation system and technique |
CN102679667A (en) * | 2012-05-11 | 2012-09-19 | 山东邹平嘉鑫粉体科技有限公司 | High-temperature quartz sand cooling and after heat recovery device |
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