CN202779602U - Gas distribution structure of thermal regenerative roasting furnace - Google Patents
Gas distribution structure of thermal regenerative roasting furnace Download PDFInfo
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- CN202779602U CN202779602U CN 201220516801 CN201220516801U CN202779602U CN 202779602 U CN202779602 U CN 202779602U CN 201220516801 CN201220516801 CN 201220516801 CN 201220516801 U CN201220516801 U CN 201220516801U CN 202779602 U CN202779602 U CN 202779602U
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- roasting
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Abstract
The utility model relates to a gas distribution structure of a thermal regenerative roasting furnace for antiquated sand. The gas distribution structure comprises a compressed air pipe, a gas supply pipeline, gas distribution bins and a gas distribution pipeline, wherein the gas distribution bins are arranged in the roasting furnace and are positioned between a roasting and heat transferring region and a sand collecting region, and each gas distribution bin is a fan-shaped chamber separated by a partition plate; the compressed air pipe is a ring pipe which surrounds the roasting furnace, and the gas supply pipeline is connected between the compressed air pipe and each gas distribution bin; and each gas distribution bin is internally provided multiple lower sand pipes which are arranged in a penetrating manner from top to bottom, and gas distribution pipes are arranged between inlet ends of lower sand pipes on a top plate of the each gas distribution bin. With the adoption of the structure, compressed air flows in the gas distribution bins after passing through outlets of the gas supply pipes penetrating through the furnace wall through the compressed air pipes, then enters in the gas distribution pipes, and then enters the roasting and heat transferring region; on the one hand, the sand temperature of the roasting and heat transferring region is reduced through heat exchange, on the other hand, the oxygen component contained in the air provides oxidizing atmosphere to sand in a combustion region so as to generate thermal chemical reaction, so as to obtain the qualified reclaimed sand; and the gas distribution structure can effectively provide aerobic air for the roasting furnace, so that the loss of air energy is reduced, and the heat loss is reduced.
Description
Technical field
The utility model relates to a kind of roaster, is specifically related to the gas distribution structure design of roaster.
Background technology
The thermal reclamation process of cast waste sand is a thermochemical reaction process, its basic principle is exactly by in aerobic environment, the heat that utilizes the burner fuel burning to produce improves the environment temperature in the roaster, and remain on more than the ignition temperature of organic matter that cast waste sand contains or carbon element, the materials such as the organic matter that causes the spontaneous combustion of cast waste sand system to reach to remove cast waste sand or carbon element are realized the purpose of the recycling of cast waste sand.
Obviously, effective operation of roaster system be unable to do without provides the aerobic air in stove, and the amount of oxygen air feed that needs by thermal chemical reaction is the necessary and sufficient condition that thermal reclamation realizes.
How can be effectively providing in the roaster and containing the oxygen air is one of key factor that determines the recycling cast waste sand quality, also is one of key factor that determines that thermal reclamation is energy-conservation, reduces discharging.So engineers is devoted to study mechanism and the device that the aerobic air can be effectively be provided in the roaster for a long time always.It is large that existing confession valve actuating mechanism and device exist the dispensing atmosphere pressure losses, dispensing gas energy consumption is high, be exactly that the airflow stability of providing and delivering is poor in addition, cause the interior sintering temperature of roaster to fluctuate greatly, when roaster operation control is bad, affect the problems such as stability (particularly the fluctuation of the igloss amount of reclaimed sand is large) of reclaimed sand quality, further cause the flue-gas temperature fluctuation, the heat loss that flue gas is taken away is larger, the problems such as regeneration energy consumption height and toxic emission processing.
Summary of the invention
The purpose of this utility model provides a kind of gas distribution structure of antiquated sand thermal reclamation roaster, effectively to provide the aerobic air in roaster, reduces the loss of gas energy, reduces heat loss.
As everyone knows, mobile hydrodynamics and the dynamic (dynamical) technology category of belonging to of gas.Therefore, supply valve actuating mechanism and the device of antiquated sand thermal reclamation roaster must satisfy hydrodynamics and principle of dynamics, and is to solve existing waste sand roasting furnace for the basic point of departure of air distributing device mechanism based on basic principle for Design of Valve and optimization.
The technical solution that the utility model adopts is as follows:
A kind of gas distribution structure of antiquated sand thermal reclamation roaster comprises compressed air hose, air duct, distribution storehouse and gas distribution pipeline.Described distribution storehouse is in roaster, between roasting and heat transfer zone and collection sand district, the distribution storehouse is the one by one fan-shaped chamber that is separated out in roaster by dividing plate, each distribution storehouse be by about the top board of two dividing plates, top, the sector space that the roasting furnace wall in the base plate of below and the outside surrounds; Described compressed air hose is one around the ring pipe of roaster, has at least one air inlet, and with each distribution storehouse between be connected air duct; Run through from the top down being provided with many lower sandpipes in each distribution storehouse, the position between the entrance point of the lower sandpipe on the distribution Hold Ceiling is provided with gas-distribution pipe.
Adopt gas distribution structure of the present utility model, compressed air flows in the distribution storehouse by the outlet of the snorkel of compressed air hose through running through the furnace wall, enter again gas-distribution pipe from the gas-distribution pipe porch of running through top board and enter roasting heat exchange zone from the gas-distribution pipe outlet, reduce on the one hand the sand temperature of roasting heat transfer zone by heat exchange, the oxygen components that contains in the aspect air in addition provides oxidizing atmosphere and thermal chemical reaction occurs to the sand in the combustion zone, obtain qualified reclaimed sand, the qualified lower sandpipe entrance of reclaimed sand through running through top board of roasting enters lower sandpipe, through passing sandpipe under the distribution storehouse, the lower sandpipe outlet of base plate flows to Ji Shaqu.
Therefore, the utility model can be obtained following technique effect:
This gas distribution structure can effectively provide the aerobic air in roaster, carry out total tolerance distribution owing to adopt compressed air to be supplied gas in the distribution storehouse at each relatively independent interval, so that compressed air distributes along roaster body section even circumferential, the compressed air hose of annular is connected with each distribution storehouse by air duct respectively, because the air duct diameter of section is far smaller than distribution storehouse sectional dimension, compressed air is in the sudden enlargement of the space of the porch in distribution storehouse, changed stream condition, variation because of its drag losses coefficient, the Reynolds number that the aerobic air stream dynamically characterizes changes, its fluidised form is changed into laminar flow regime from Turbulent Flow, so that the pressure distribution of aerobic air is readjusted in becoming delivery gas storehouse, adjusted in the distribution storehouse along the aerobic air velocity of air duct vertical plane direction and distributed, utilize the structural change between snorkel and the distribution storehouse that the compressed air damping that enters in the distribution storehouse is stably improved, reach and provide and deliver again equably the aerobic air in each distribution mouth of pipe, reduce the dispensing vapour lock, reduce energy consumption of compressor; Aspect in addition, the gas distribution pipeline that links to each other with change delivery gas storehouse significantly reduces because entrance section is long-pending, strengthen so that enter the aerobic air flow resistance of gas distribution pipeline, it is large that the Reynolds number value becomes, make the gaseous state that flows in the pipe enter turbulent flow, high velocity air can reduce the thermal-convection resistance layer thickness of distribution tube wall greatly on the one hand, improve heat convection efficient, in addition the aspect is so that flow to the temperature of the aerobic air in roasting heat exchange zone and raise fast, the aerobic air that enters the roasting heat exchange can absorb the interior heat of roast area less, reaches the purpose that reduces roaster roasting energy consumption; They are three years old, because having the furnace air thermograde that the aerobic air of higher temperature enters in the roasting heat exchange zone of roasting heat exchange when zone and higher temperature reduces, be conducive to avoid the interior sintering temperature of roaster to fluctuate greatly, guarantee that roaster operation control is good, guarantee that reclaimed sand igloss amount is stable, further also can reduce simultaneously the heat loss that the flue-gas temperature fluctuation is taken away, realize reducing regeneration energy consumption and toxic emission.
Description of drawings
Fig. 1 is the position of gas distribution structure of the present utility model in roaster and the longitudinal sectional drawing in a distribution storehouse;
Fig. 2 is the bottom transverse profile of gas distribution structure of the present utility model;
Fig. 3 is a distribution storehouse schematical top view of gas distribution structure of the present utility model.
Further specify structure of the present utility model below in conjunction with accompanying drawing:
Referring to Fig. 1, Fig. 2 and Fig. 3, this gas distribution structure comprises compressed air hose 7, air duct 8, distribution storehouse 9 and gas-distribution pipe 2 etc.Distribution storehouse 9 is arranged in the roaster 1, between the roasting and heat transfer zone 10 and collection sand district 5 of roaster.Distribution storehouse 9 is the eight fan-shaped chambers that are separated out in roaster by dividing plate 11, each distribution storehouse be by about the top board 3 of two dividing plates 11, top, the sector space that the base plate 6 of below and the roasting furnace wall in the outside surround, they evenly distribute centered by the body of heater axle center of roaster.Compressed air hose 7 is ring pipes that arrange around roaster 1, has two symmetrical air inlets, is communicated with by air duct 8 between compressed air hose and each distribution storehouse.Each distribution storehouse is run through from the top down and is provided with 15 lower sandpipes 4, and the position between the lower sandpipe entrance point on the distribution Hold Ceiling arranges 8 gas-distribution pipes 2, and gas-distribution pipe 2 puts in roasting and the heat transfer zone 10.
Claims (3)
1. the gas distribution structure of an antiquated sand thermal reclamation roaster comprises compressed air hose, air duct, distribution storehouse and gas-distribution pipe; It is characterized in that: described distribution storehouse is in roaster, between roasting and heat transfer zone and collection sand district, the distribution storehouse is the one by one fan-shaped chamber that is separated out in roaster by dividing plate, each distribution storehouse be by about the top board of two dividing plates, top, the sector space that the roasting furnace wall in the base plate of below and the outside surrounds; Described compressed air hose is one around the ring pipe of roaster, has at least one air inlet, and with each distribution storehouse between be connected air duct; Run through from the top down being provided with many lower sandpipes in each distribution storehouse, the position between the entrance point of the lower sandpipe on the distribution Hold Ceiling is provided with gas-distribution pipe.
2. the gas distribution structure of antiquated sand thermal reclamation roaster according to claim 1 is characterized in that: be arranged with two air inlets on the described compressed air hose.
3. the gas distribution structure of antiquated sand thermal reclamation roaster according to claim 1 and 2, it is characterized in that: described distribution storehouse has four, six or eight, and they evenly distribute centered by the body of heater axle center of roaster.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516801 CN202779602U (en) | 2012-10-10 | 2012-10-10 | Gas distribution structure of thermal regenerative roasting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220516801 CN202779602U (en) | 2012-10-10 | 2012-10-10 | Gas distribution structure of thermal regenerative roasting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202779602U true CN202779602U (en) | 2013-03-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220516801 Expired - Lifetime CN202779602U (en) | 2012-10-10 | 2012-10-10 | Gas distribution structure of thermal regenerative roasting furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN202779602U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213334A (en) * | 2018-01-09 | 2018-06-29 | 无锡锡南铸造机械股份有限公司 | Thermal current Multi-axle verticle back and forth rubs frosted regenerating device with the hands |
| CN109434014A (en) * | 2018-11-15 | 2019-03-08 | 重庆长江造型材料（集团）股份有限公司 | A kind of antiquated sand roasting system |
-
2012
- 2012-10-10 CN CN 201220516801 patent/CN202779602U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108213334A (en) * | 2018-01-09 | 2018-06-29 | 无锡锡南铸造机械股份有限公司 | Thermal current Multi-axle verticle back and forth rubs frosted regenerating device with the hands |
| CN108213334B (en) * | 2018-01-09 | 2019-06-28 | 无锡锡南铸造机械股份有限公司 | Thermal current Multi-axle verticle back and forth rubs frosted regenerating device with the hands |
| CN109434014A (en) * | 2018-11-15 | 2019-03-08 | 重庆长江造型材料（集团）股份有限公司 | A kind of antiquated sand roasting system |
| CN109434014B (en) * | 2018-11-15 | 2023-11-07 | 重庆长江造型材料（集团）股份有限公司 | Waste sand roasting system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 400707 Chongqing city Beibei District tongjiaxi Township five-star Road No. 6 Patentee after: CHONGQING CHANGJIANG RIVER MOULDING MATERIAL (GROUP) Co.,Ltd. Address before: 400709 Chongqing city Beibei District tongjiaxi Township Wuxing Road No. 7 Patentee before: CHONGQING CHANGJIANG MOLDING MATERIAL GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130313 |