CN202329114U - Fluidization fluidizing reactor - Google Patents
Fluidization fluidizing reactor Download PDFInfo
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- CN202329114U CN202329114U CN2011204402138U CN201120440213U CN202329114U CN 202329114 U CN202329114 U CN 202329114U CN 2011204402138 U CN2011204402138 U CN 2011204402138U CN 201120440213 U CN201120440213 U CN 201120440213U CN 202329114 U CN202329114 U CN 202329114U
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Abstract
The utility model relates to a fluidization fluidizing reactor which has the advantages of large productive capacity and high heat recovery efficiency, and air return containing large amount of ash is not directly sent to an upper-part hearth. The fluidization fluidizing reactor is characterized in that a slag tap and a slag overflow outlet are connected with each other through a heat exchange type rear chamber fluidized bed, and the heat exchange type rear chamber fluidized bed comprises a rear chamber fluidized bed body, an air chamber device and a heat-exchanging device; the rear chamber fluidized bed body comprises a body with a hollow chamber, an slag inlet and a deslagging port, and the air chamber device is arranged at the bottom of the body and blows air to the interior of the chamber of the body; the heat-exchanging device comprises a cooling pipe bundle, and the cooling pipe bundle stretches into the interior of the chamber of the body and fully contacts with flowing slag at the interior of the chamber of the body; the deslagging port is connected with the slag overflow outlet, and the slag inlet is connected with the slag tap arranged on the side of a fluidized bed layer; and the slag inlet also serves as an air flue used for guiding air in the rear chamber fluidized bed body into the fluidized bed layer. The fluidization fluidizing reactor provided by the utility model has the advantages that the combustion is more sufficient, economic benefit and heat utilization ratio are improved, tapping temperature is greatly reduced, the structure is compact, the floor area is small, the installation is simple and convenient, and the operation is safe.
Description
Technical field
The utility model relates to the fluidizing reactor of troilite, zinc concentrate roasting sulphuric acid plant; Relate in particular to this kind fluidizing reactor slag tap the part improvement.
Background technology
The fluidization fluidizing reactor is one of capital equipment of troilite, zinc concentrate sulphuric acid plant calcining process, and the stove shape mainly contains two kinds on straight barrel type and top expansion type.The straight barrel type fluidizing reactor is used for the roasting in non-ferro metals floatation ore deposit more, and intensity of roasting is low, and the fluidized bed furnace of top expansion type is used for the roasting of troilite mostly because of intensity of roasting, and China's most of ore deposit roaster belongs to this type.
Conventional fluidized bed roasting furnace body is that box hat liner insulating brick serves as a contrast firebrick structure (containing insulating brick liner 1, refractory brick liner 2) again.Like Fig. 6, shown in 7, whole body of heater can be divided into several parts, and top is burner hearth, comprises boiling bed 8, middle part expanding reach and upper furnace 7.Cooling water tank 9 is housed in the siege,, reduces the temperature of boiling bed 8 walls to remove the waste heat of boiling bed 8.The middle part is the conical section that upwards enlarges, and the area of the sectional area ratio boiling bed 8 of upper furnace 7 is big, takes out of with the minimizing solids to fall low gas velocity.The bottom is that air chamber is a lower air chamber 3, is provided with air intlet pipe 4, and is middle across a dispersion plate 5, on pour into a mould refractory concrete, be embedded with many dispersion plate blast caps 6.Body of heater also is provided with adapters such as charge door 10, slag overfall 11, furnace gas export 12, secondary wind import 13, lighting-up tuyere 14, safety vent mouth 15 in addition.
The roasting process in ore deposit just carries out in burner hearth, and batcher is sent qualified ore deposit into fluidizing reactor, with the air boiling roasting that blower fan is sent here, and 850～950 ℃ of control fluidized layer temperatures.The about 920 ℃ of entering waste heat boilers cooling of fluidizing reactor Outlet Gas Temperature is also reclaimed heat, 900 ℃ of entering cooling systems of high temperature furnace slag that the fluidizing reactor overfall is discharged.From the enterprise operation situation, many existence cause stopping because of fluidizing reactor dreg removing system fault.The reason of high fault mainly is:
1, discharges the slag temperature height, carry the stainless steel pipes material fragile;
2, fluidized bed furnace overfall and cooling device distance, it is long to connect conveyance conduit, easy blocking;
3, the discontinuous cooling device that causes of deslagging is uneven in temperature, and weld seam expands with heat and contract with cold easy to crack.
Frequent maintenance influences the driving rate of system, and maintenance has increased system operation cost, and there is potential safety hazard in system's long-period stable operation.See from resource and environmental angle in addition, also have following problem:
1, heat loss is big, and the cooling of 900 ℃ of slags to be adopted about spray coolings to 400 ℃ and see off, and slag heat does not reclaim, and has caused energy waste.
2, the cooling deslagging need consume a large amount of water, and production environment is polluted.
3, operation link is many, relates to deslagging, conveying, trickle cooling, blowdown adjusting, and technology and control are complicated.
The utility application file that the disclosed publication number of the 1998.10.18. of State Intellectual Property Office " CN1197179A ", name are called " directly blowing bubbling furance slag after heat recovering method and system thereof " discloses a kind of air cooled slag of utilizing, and it is combustion-supporting to reclaim the method for afterheat of slags to be sent into fluidized bed furnace by the hot blast after the slag heating.Concrete technological means is: make that to flow into slag from the slag of the ebullated bed discharging of fluidized bed furnace cooling bed; The cold air cooling bed with blasting slag carries out heat exchange; Its characteristics are the hot-air after the slag heating is introduced stove from the suspension section of fluidized bed furnace, as the required combustion air of fluidized bed furnace second-time burning.
The direct blast type fluidized bed furnace afterheat of slags recovery system that designs according to above-mentioned direct blowing bubbling furance slag after heat recovering method combines with fluidized bed furnace.Fluidized bed furnace is made up of ebullated bed, suspension section, air compartment, convection tube, back-end surfaces and pressure fan etc. usually; The main feature of native system is to adopt multi-cell fluidized bed cooling bed as slag; Multi-cell fluidized bed comprises lathe bed, air distribution plate and windy chamber air inlet structure, has into cinder notch, slag-drip opening and air outlet its air distribution plate level or be obliquely installed on the lathe bed; Be separated into dividing plate in the lathe bed on the air distribution plate and be no less than 3 chamber; Bottom, each chamber communicates, then have under the air distribution plate with lathe bed in the corresponding the same number of air compartment in chamber, be air inlet under the air compartment.It is gone into cinder notch and links to each other with the overflow slag seepage flow mouth on ebullated bed top and the cold slag discharge pipe of ebullated bed bottom respectively through the slag conveyance conduit; Air inlet is linked pressure fan through the cold wind conveyance conduit, and air outlet is then linked the hot blast that is positioned at the fluidized bed furnace suspension section through the hot blast conveying pipe road and gone into fire door.Said hot blast is gone into the negative pressuren zone that fire door is positioned at the fluidized bed furnace suspension section.
In recent years, along with modernization is industrial towards large-scale development, the scale of fluidized bed furnace from ten thousand tons/year of 1-5 in one's early years, develops into ten thousand tons/year of 10-50 of today.Above-mentioned patented technology means are drawn stove with slag and are adopted air cooling can't adapt to the demand of present processing industry outward, in case slag flow, flow velocity increase, can't obtain the slag temperature that this article claims at slag notch and be reduced to 50 ℃ by 900 ℃.Even and if the requirement claimed by this article of its fluidizing velocity (1-3m/s), air quantity is implemented in practice, its tapping temperature also is difficult to reach 50 ℃.And adopt the mode in slag, return air shunting in this article, the return air that contains a large amount of ash directly gets into upper furnace, can have a negative impact to integral body processing.
The utility model content
The utility model provides a kind of production capacity big to above-mentioned defective, and recuperation of heat usefulness is higher, and the return air that will not contain a large amount of ash is directly sent into the fluidization fluidizing reactor of upper furnace.
The technical scheme of the utility model is: said body of heater comprises lower air chamber, boiling bed, expanding reach, upper straight section and top cover from the bottom to top; Between said boiling bed and lower air chamber, be provided with dispersion plate, be provided with slag notch at the side of said boiling bed, said slag notch lower edge height is higher than said dispersion plate plate face height; Outside body of heater, be provided with the slag overfall, said slag notch and said slag overfall through heat exchange type after the chamber ebullated bed link to each other;
The chamber ebullated bed comprises chamber, back ebullated bed body, air compartment device and heat-exchange device behind the said heat exchange type;
Chamber, said back ebullated bed body comprises body, slag inlet and the slag-drip opening with hollow chamber;
Said air compartment device is located at the bottom of said body, to the chamber interior air blast of body;
Said heat-exchange device comprises cooling tube bundle, and said cooling tube bundle stretches into the chamber interior of said body, fully contacts with the mobile slag of the chamber interior of said body;
Said slag-drip opening connects said slag overfall;
Said slag inlet connects the slag notch of said boiling bed side; And said slag inlet double as is inducted into the air channel in the said boiling bed with the wind in the ebullated bed body of chamber, said back.
The inwall of said boiling bed is provided with cooling water tank, and said heat-exchange device is connected with said cooling water tank.
Said slag inlet lower edge is provided with the slope at the outer high interior end, will be imported in the said boiling bed by the wind that ebullated bed body bottom, chamber, back air compartment device bloats.
The height of said slag inlet lower edge is higher than the height of said slag-drip opening lower edge.
The outer face of ebullated bed body is provided with and handles door in chamber, said back.
Said air compartment device comprises air compartment and blast cap, and said air compartment is fixedly connected on the bottom of chamber, said back ebullated bed body base plate, and said blast cap is fixedly connected on the base plate of chamber, said back ebullated bed body.
Chamber, said back ebullated bed body is made up of inner steel lining insulating brick and heat-resisting mould material.
The intrinsic slag-drip opening of chamber, the said back ebullated bed outside is provided with deslagging chamber, and said deslagging chamber connects said slag overfall.
The utility model with heat exchange type after the chamber ebullated bed link to each other with furnace body and form an integral body.The slag of body of heater boiling bed flows directly into behind the heat exchange type in the ebullated bed of chamber, and after the inflow, the cooling air of chamber ebullated bed acts on slag from bottom to top behind the heat exchange type, makes slag in cooling, keep " boiling " state; And the slag of " boiling " can fully contact with the cooling tube bundle that is full of heat exchange medium and carry out heat exchange; Cooling air is heated in to the slag effect, and from the reverse infiltration furnace charge of slag notch (slag inlet of chamber ebullated bed behind the heat exchange type) of body of heater boiling bed, ash wherein can be absorbed by furnace charge, and can make burning more abundant through the cold wind of preheating.
The utility model has the advantages that: 1) air inlet of heat reclamation device directly gets into roaster as secondary wind before expanding reach, makes burning more abundant.2) slag obtains high Fe contained scum etc. through the auxiliary air fluidized bed roasting, has improved economic benefit.3) heat of slags of cooling tube bundle recovery produces middle pressure steam (3.82MPa, 256 ℃), improves heat utilization ratio.4) tapping temperature reduces (480-520 ℃) greatly, has alleviated the service requirement of dreg removing system.5) compact conformation, little, the simple installation of floor space, handling safety.
Description of drawings
Fig. 1 is the structural representation of the utility model,
Fig. 2 is the structural representation of heat-energy recovering apparatus in the utility model,
Fig. 3 is an A-A cutaway view among Fig. 1,
Fig. 4 is the structural representation of cooling tube bundle in the utility model heat-energy recovering apparatus,
Fig. 5 is the vertical view of Fig. 4,
Fig. 6 is the structural representation of the utility model background technology,
Fig. 7 is a B-B cutaway view among Fig. 6;
1 is the insulating brick liner among the figure; 2 is the refractory brick liner; 3 is lower air chamber; 4 is the air intlet pipe; 5 is dispersion plate; 6 is the dispersion plate blast cap; 7 is upper furnace; 8 are the boiling bed; The 81st, slag notch; 9 is cooling water tank; 10 is charge door; 11 is the slag overfall; 12 is furnace gas export; 13 is the auxiliary air import; 14 is lighting-up tuyere; 15 is the safety vent mouth; 16 is chamber, back ebullated bed body; The 161st, the slag inlet lower edge; 162 slag-drip opening lower edges; 17 is fire-resistant inwall; 18 is air compartment; 19 is air inlet; 20 is dispersion plate; 21 is blast cap; 22 is cooling tube bundle; 23 is deslagging chamber; 24 for handling door; The 25th, cleaning door.
The specific embodiment
The utility model is shown in Fig. 1-5, and said body of heater comprises lower air chamber 3, boiling bed 8, expanding reach (being upper furnace 7), upper straight section and top cover (establishing safety vent mouth 15 on the top cover) from the bottom to top; Between said boiling bed 8 and lower air chamber 3, be provided with dispersion plate 5, be provided with slag notch 81 at the side of said boiling bed 8, said slag notch lower edge 82 highly is higher than said dispersion plate 5 plate face height; Outside body of heater, be provided with slag overfall 11, said slag notch 81 links to each other through chamber ebullated bed behind the heat exchange type with said slag overfall 11;
The chamber ebullated bed comprises chamber, back ebullated bed body, air compartment device and heat-exchange device behind the said heat exchange type;
Chamber, said back ebullated bed body comprises body 16, slag inlet and the slag-drip opening with hollow chamber;
Said air compartment device is located at the bottom of said body 16, to the chamber interior air blast of body 16;
Said heat-exchange device comprises cooling tube bundle 22, and said cooling tube bundle 22 stretches into the chamber interior of said body 16, fully contacts with the mobile slag of the chamber interior of said body 16;
Said slag-drip opening connects said slag overfall 11;
Said slag inlet connects the slag notch 81 of said boiling bed side; And said slag inlet 81 double as are inducted into the air channel in the said boiling bed 8 with the wind in the ebullated bed body of chamber, said back.
The inwall of said boiling bed 8 is provided with cooling water tank 9, and said heat-exchange device is connected with said cooling water tank 9 by said body of heater is outside.
Said slag inlet lower edge 161 is provided with the slope at the outer high interior end, will be imported in the said boiling bed 8 by the wind that chamber, back ebullated bed body 16 bottom air compartment devices bloat.
The height of said slag inlet lower edge 161 is higher than the height of said slag-drip opening lower edge 162.Be beneficial to the discharge of slag.
The outer face of ebullated bed body 16 is provided with and handles door 24 in chamber, said back.Two sides are respectively equipped with cleaning door 25.Be convenient to ebullated bed body 16 inside, chamber, back are cleared up fully.
Said air compartment device comprises air compartment 18 and blast cap 21, and said air compartment 18 is fixedly connected on the bottom of chamber, said back ebullated bed body 16 base plates, and said blast cap 21 is fixedly connected on the base plate of chamber, said back ebullated bed body 16.
Chamber, said back ebullated bed body 16 is made up of inner steel lining insulating brick and heat-resisting mould material.Make chamber, back ebullated bed body 16 have fire-resistant inwall 17.
The slag-drip opening place of chamber, said back ebullated bed body 16 is provided with deslagging chamber 23, and said deslagging chamber 23 connects said slag overfall 11.
The utility model unites two into one warm sludge cooling, conveying equipment and body of heater, has both reclaimed the warm sludge heat, has solved high temperature warm sludge conveying material rapid wear problem, has simplified technological process.At the device that the ebullated bed slag notch of conventional fluidizing reactor is provided with slag cooling, heat recovery and slags tap, this device integral body of formation that links to each other with furnace body.Heat reclamation device comprises air compartment, gas distribution grid, cooling device (being heat-exchange device), dreg discharging box (i.e. chamber, back ebullated bed body 16), the deslagging chamber of deslagging chamber and handles door etc.The warm sludge that fluidizing reactor is discharged carries out secondary boiling cooling in the ebullated bed body of chamber, back.Stokehold air that blower fan send passes through air compartment and gets into, and after distribution grid and the intensification of warm sludge boiling bed, gets into roaster, and the secondary wind entering flue gas system as roaster has reclaimed heat of slags indirectly.Carry out heat exchange through heat reclamation device cooling water tank and slag, control heat reclamation device bubbling bed temperature produces middle pressure steam about 510 ℃, improve heat utilization ratio.
Pyrite-based sulfuric acid production device with 200,000 tons of/year sulfur-bearings 35% is an example, and fluidizing reactor is per hour discharged the about 10t of slag, reduces to 510 ℃ of calculating by slag from 900 ℃, per hour shifts out heat through calculating slag:
Q slag=10 * 1000 * (0.956 * 900-0.918 * 510)=3922200KJ/h
Atmosphere temperature rising to 510 ℃ calorific requirement: Q sky=4900 KJ/h
Recyclable heat: Q=3922200-4900=3917300 KJ/h
Can produce 3.82MPa, 450 ℃ of middle pressure steam 1.21t/h, a year increase steam production is 9680t, practices thrift the nearly 1100t of mark coal.
Slag temperature after heat exchange about 510 ℃ far below 900 ℃ of conventional slag temperatures, the cooling capacity of postorder residue extraction mechanism is required to reduce greatly, reduced equipment weld bond cracking possibility.While is as the part of fluidized bed furnace; Ebullated bed body in chamber is welded by the Q345 steel plate behind the heat reclamation device; Be followed successively by insulating brick, castable refractory etc. in the ebullated bed body of back chamber; Cancel stainless steel warm sludge carrier pipe and stainless steel water spray cooling device, saved cost of manufacture, simple installation, safer in the operation.
The operation principle of the utility model is:
Air gets into fluidized bed furnace by air intlet pipe 4 and carries out roasting with the mineral aggregate that gets into fluidizing reactor through charge door 10 at boiling bed 8; The roasting space 7 through top is after furnace gas export 12 gets into the waste heat boiler recovery waste heat, and roasting, cooled warm sludge get into the slag heat-energy recovering apparatus from slag overfall 11.Air from the air inlet 19 of slag heat-energy recovering apparatus carries out the secondary fluidized bed roasting at back chamber ebullated bed (back chamber ebullated bed body 16 inner chambers) to warm sludge; The back of warm sludge and cooling tube bundle 22 heat exchange cooling simultaneously gets into deslagging chamber 23 and slags tap; This moment, slag temperature was about 510 ℃, and the hot-air after the roasting gets into fluidizing reactor as secondary wind through slag notch 81.
Ebullated bed body in chamber adopts Q345 behind the fluidizing reactor of the utility model, back chamber ebullated bed body liner insulating brick and refractory brick, and in order further to reclaim heat, the utility model reclaims the slag heat.
Claims (8)
1. fluidization fluidizing reactor, said body of heater comprise lower air chamber, boiling bed, expanding reach, upper straight section and top cover from the bottom to top; Between said boiling bed and lower air chamber, be provided with dispersion plate, be provided with slag notch at the side of said boiling bed, said slag notch lower edge height is higher than said dispersion plate plate face height; Outside body of heater, be provided with the slag overfall, it is characterized in that, said slag notch and said slag overfall through heat exchange type after the chamber ebullated bed link to each other;
The chamber ebullated bed comprises chamber, back ebullated bed body, air compartment device and heat-exchange device behind the said heat exchange type;
Chamber, said back ebullated bed body comprises body, slag inlet and the slag-drip opening with hollow chamber;
Said air compartment device is located at the bottom of said body, to the chamber interior air blast of body;
Said heat-exchange device comprises cooling tube bundle, and said cooling tube bundle stretches into the chamber interior of said body, fully contacts with the mobile slag of the chamber interior of said body;
Said slag-drip opening connects said slag overfall;
Said slag inlet connects the slag notch of said boiling bed side; And said slag inlet double as is inducted into the air channel in the said boiling bed with the wind in the ebullated bed body of chamber, said back.
2. fluidization fluidizing reactor according to claim 1 is characterized in that the inwall of said boiling bed is provided with cooling water tank, and said heat-exchange device is connected with said cooling water tank.
3. fluidization fluidizing reactor according to claim 1 is characterized in that, said slag inlet lower edge is provided with the slope at the outer high interior end, will be imported in the said boiling bed by the wind that ebullated bed body bottom, chamber, back air compartment device bloats.
4. fluidization fluidizing reactor according to claim 1 is characterized in that the height of said slag inlet lower edge is higher than the height of said slag-drip opening lower edge.
5. fluidization fluidizing reactor according to claim 1 is characterized in that, the outer face of ebullated bed body is provided with and handles door in chamber, said back.
6. fluidization fluidizing reactor according to claim 1; It is characterized in that; Said air compartment device comprises air compartment and blast cap, and said air compartment is fixedly connected on the bottom of chamber, said back ebullated bed body base plate, and said blast cap is fixedly connected on the base plate of chamber, said back ebullated bed body.
7. fluidization fluidizing reactor according to claim 1 is characterized in that, chamber, said back ebullated bed body is made up of inner steel lining insulating brick and heat-resisting mould material.
8. according to arbitrary described fluidization fluidizing reactor among the claim 1-7, it is characterized in that the intrinsic slag-drip opening of chamber, the said back ebullated bed outside is provided with deslagging chamber, said deslagging chamber connects said slag overfall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204402138U CN202329114U (en) | 2011-11-09 | 2011-11-09 | Fluidization fluidizing reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204402138U CN202329114U (en) | 2011-11-09 | 2011-11-09 | Fluidization fluidizing reactor |
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| Publication Number | Publication Date |
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| CN202329114U true CN202329114U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2011204402138U Withdrawn - After Issue CN202329114U (en) | 2011-11-09 | 2011-11-09 | Fluidization fluidizing reactor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382976A (en) * | 2011-11-09 | 2012-03-21 | 建业庆松集团有限公司 | Fluidized boiling roasting furnace |
| CN103836948A (en) * | 2014-02-25 | 2014-06-04 | 扬州安宇化工设备有限公司 | Fluidized bed roaster and system for high-carbon molybdenum nickel mine |
| CN108892109A (en) * | 2018-08-03 | 2018-11-27 | 禄丰天宝磷化工有限公司 | A kind of oxide boiling roasting device of production of sulfur from pyrite acid |
-
2011
- 2011-11-09 CN CN2011204402138U patent/CN202329114U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102382976A (en) * | 2011-11-09 | 2012-03-21 | 建业庆松集团有限公司 | Fluidized boiling roasting furnace |
| CN102382976B (en) * | 2011-11-09 | 2013-04-17 | 建业庆松集团有限公司 | Fluidized boiling roasting furnace |
| CN103836948A (en) * | 2014-02-25 | 2014-06-04 | 扬州安宇化工设备有限公司 | Fluidized bed roaster and system for high-carbon molybdenum nickel mine |
| CN103836948B (en) * | 2014-02-25 | 2016-04-27 | 扬州安宇化工设备有限公司 | A kind of fluidizing reactor of high-carbon molybdenum-nickel ore and system |
| CN108892109A (en) * | 2018-08-03 | 2018-11-27 | 禄丰天宝磷化工有限公司 | A kind of oxide boiling roasting device of production of sulfur from pyrite acid |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20130417 |
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| RGAV | Abandon patent right to avoid regrant |