CN202692623U - Boiler waste heat secondary drying device - Google Patents
Boiler waste heat secondary drying device Download PDFInfo
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- CN202692623U CN202692623U CN 201220315953 CN201220315953U CN202692623U CN 202692623 U CN202692623 U CN 202692623U CN 201220315953 CN201220315953 CN 201220315953 CN 201220315953 U CN201220315953 U CN 201220315953U CN 202692623 U CN202692623 U CN 202692623U
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- secondary drying
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Abstract
The utility model relates to the technical field of manufacturing equipment of calcium carbonate, in particular to a boiler waste heat secondary drying device. The boiler waste heat secondary drying device can utilize boiler waste heat to realize dehydration in the production process of light calcium carbonate. The boiler waste heat secondary drying device comprises a drying conveying belt and is characterized in that the drying conveying belt comprises a box; the box is divided with two layers comprising an upper box and a lower box; the upper box is provided with a smoke inlet pipe connected with a boiler discharge flue; the lower box is provided with a smoke outlet pipe connected with the boiler discharge flue; a feeding groove is formed in the upper box; a discharging groove is formed in the lower box; and a ventilating pipe is arranged between the upper box and the lower box. The boiler waste heat secondary drying device completely utilizes the boiler waste heat, greatly reduces the energy consumption of a drying machine, and is energy-saving, environment-friendly, good in drying effect, high in heat utilization ratio, simple in structure, convenient to operate, flexible in production line arrangement and low in comprehensive cost.
Description
Technical field
The utility model relates to calcium carbonate manufacturing equipment technical field, especially a kind of boiler afterheat secondary drying unit.
Background technology
In the production process of precipitated calcium carbonate, water content is an important indicator of product quality, existing production line is that dehydration to 35% left and right sides solids content directly enters conduction oil tray dryer machine by conveyer, dry operation by dryer separately, not only power consumption is large, and moisture content also is difficult to reach higher standard, and boiler in the course of the work, the cigarette hot gas of its discharge greatly but is not used, and this one side is that to waste but be that large energy consumption is very unreasonable in actual production process on the other hand.Existing boiler residual utilization side heat, many examples are arranged, basically be waste heat to be converted into other energy by water use, be a kind of boiler afterheat recovering device of CN102287805A such as patent publication No., it is to be provided with the device of waste heat being pass on the boiler blow-down water case that is changed to hot water and being installed in the endothermic water tank on the flue, utilization also be the exhaust gases passes waste heat.And for example patent publication No. is a kind of boiler waste heat recovery system of CN102183007A, is that flue collector is carried out waste heat recovery by aqueous medium equally; Also just like the patent announcement number a kind of system that utilizes heat-exchange device to collect boiler afterheat for CN202083089U.Its objective is in order to provide a kind of simple in structure, can collect the waste heat of flue gas that boiler discharges, comprise flue, one end of flue is connected with the exhaust opening of boiler, wherein also comprises waste heat boiler, and the other end of flue is connected with the air inlet of waste heat boiler, the exhaust outlet of waste heat boiler is provided with smokejack, waste heat boiler inside is provided with heat exchanger tube, and an end of heat exchanger tube is connected with water inlet pipe, and the other end of heat exchanger tube is connected with hot-water line.These devices all can not be realized the dewatering operation of powder.
Summary of the invention
The purpose of this utility model is the problem of utilizing boiler afterheat to dewater in the Production of Light Calcium Carbonate process in order to solve, and a kind of reasonable in design, less investment are provided, the obvious boiler afterheat secondary of drying effect drying unit.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals: a kind of boiler afterheat secondary drying unit, comprise the oven dry conveyer belt, it is characterized in that described oven dry conveyer belt comprises a casing, casing is divided into upper box and lower box is two-layer, upper box is provided with the smoke-intake pipe that is connected with the boiler exhaust gas road, lower box is provided with the pipe that is connected with the boiler exhaust gas road, be provided with feeding groove in the upper box, be provided with blanking groove in the lower box, be provided with breather pipe between upper box and the lower box.The oven dry conveyer belt is delivered to the other end to the material precipitated calcium carbonate of required oven dry by feeding groove from an end, fed back by blanking groove again, adopt upper and lower two-layer oven dry casing can reduce the length of conveyer belt, the smoke-intake pipe of oven dry conveyer belt is that temperature higher part position is connected with the exit in boiler exhaust gas road, the pipe of oven dry conveyer belt links to each other with boiler exhaust gas road tail end, also can directly be connected in the exhaust gas processing device.According to the design principle of the technical program, conveyer belt can be designed as other conveyor constructions such as disc type, at the delivery chute periphery of conveyer the casing that the boiler afterheat flue flows is set, and can be fit to the length limited place like this.
As preferably, described upper box and lower box are provided with several intermediate connectors along its length between the both sides, and breather pipe is arranged on the two-end part of upper box and lower box.Owing to be provided with ventilation space between upper box and the lower box, aim at the moisture that is evaporated in the precipitated calcium carbonate and do passage, as supporting, lower box is directly by ground supporting by intermediate connector for upper box.
As preferably, an end of described feeding groove is provided with the spout of feeding machine, and an end of blanking groove is connected with the charging aperture of elevator.Precipitated calcium carbonate enters in the conveyer belt by feeding machine, and the material that steams behind the moisture is delivered to conduction oil tray dryer machine by elevator.
As preferably, the lower end closed of described spout is arranged on the upper box.Precipitated calcium carbonate is easily waved loose in the blanking process, affects environment, and the impact site in the course of conveying adopts enclosed construction more.
As preferably, be provided with drag chain conveyor in the described conveyer belt.Drag chain conveyor one is to be fit to conveying powder material, the 2nd, have flat hopper, and satisfy the one-tenth of boiler afterheat flue fully and put.
As preferably, described pipe and boiler exhaust gas road connecting portion are higher than smoke-intake pipe and boiler exhaust gas road connecting portion.The boiler smoke of high temperature is by after the drying course, and temperature descends to some extent, and cryogenic gas weight relatively-high temperature gas is large, and cryogenic gas moves to lower box.
As preferably, described upper box is provided with heat-insulation layer except all the other sides of a side towards feeding groove.The employing insulation material is heat insulation, and heat is executed to feeding groove one side as far as possible, and the largest ground heat by conduction amount is to heating object.
As preferably, described lower box is provided with heat-insulation layer except all the other sides of a side towards feeding groove.Heat-insulation layer can adopt the insulation materials such as asbestos.
As preferably, length and the amount of product throughput of described oven dry conveyer belt are suitable.The length of arranging conveyer belt according to the design of situation, boiler residual heat and the output in factory place is to provide conveyer belt best drying effect.
As preferably, be provided with air exhausting device in the pipeline of described pipe.Occur flowing backwards in whole casing flows for fear of boiler smoke, air exhausting device has guaranteed that pipe is in negative pressure state all the time, to keep the smoothness of flue gas.
The beneficial effects of the utility model are: take full advantage of boiler afterheat, and greatly reduce the power consumption of dryer, energy-conserving and environment-protective; Good drying effect, heat utilization efficiency height because having adopted airtight heat insulation type casing and scraper-type chain conveying, improve the utilization rate of heat and drying effect greatly; Simple in structure, easy to operate, flexible by production-line arrangement, integrated cost is low.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is a kind of oven dry conveyer belt part-structure schematic diagram of the present utility model.
Fig. 3 is that the A-A of the utility model Fig. 2 is to the sectional structure schematic diagram.
Among the figure: 1. boiler, 2. smokejack, 3. smoke-intake pipe, 4. drag chain conveyor, 5. oven dry conveyer belt, 51. upper box, 52. lower boxes, 53. feeding grooves, 54. blanking grooves, 55. intermediate connectors, 56. breather pipe, 57. heat-insulation layers, 6. spout, 7. elevator, 8. pipe.
The specific embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Referring to Fig. 1, a kind of boiler afterheat secondary of present embodiment drying unit, press boiler 1, oven dry conveyer belt 5, feeding machine, elevator 7 is arranged, the length of oven dry conveyer belt 5 is made as 30m, conveyer belt 5 is by upper box 51 and 52 two-layer compositions of lower box, connect by intermediate connector 55 between upper box 51 and the lower box 52 and be fixed on the pedestal of ground, as shown in Figure 2, upper box 51 and lower box 52 are provided with the flue of sealing and pass through breather pipe 56 connections of side, two ends, upper box 51 also is provided with the smoke-intake pipe 3 that is connected with boiler 1 smokejack, lower box 52 is provided with the pipe 8 that is connected with boiler 1 smokejack, be provided with exhaust fan in the output channel of pipe 8, feeding groove 53 is housed in the upper box 51, is provided with blanking groove 54 in the lower box 52, drag chain conveyor 4 is carried by feeding groove 53 and 52 pairs of precipitated calcium carbonate materials of lower box.
During work, the precipitated calcium carbonate solid of dehydration 35% enters oven dry conveyer belt 5 from spout 6, because upper box 51, lower box 52 link to each other with boiler 1 smokejack, whole spin manifold temperature raises during operation, precipitated calcium carbonate in the conveyer belt 5 is dried operation, moisture can fall 5%, and the material after the baking flows to elevator 7 from blanking groove 54 outlets, enters conduction oil tray dryer machine again and carries out post processing.
Above-described embodiment is to explanation of the present utility model, is not to restriction of the present utility model, any structure after the simple transformation of the present utility model is all belonged to protection domain of the present utility model.
Claims (9)
1. boiler afterheat secondary drying unit, comprise oven dry conveyer belt (5), it is characterized in that described oven dry conveyer belt (5) comprises a casing, casing is divided into upper box (51) and lower box (52) is two-layer, upper box (51) is provided with the smoke-intake pipe (3) that is connected with boiler (1) smokejack, lower box (52) is provided with the pipe (8) that is connected with boiler (1) smokejack, be provided with feeding groove (53) in the upper box (51), be provided with blanking groove (54) in the lower box (52), be provided with breather pipe (56) between upper box (51) and the lower box (52).
2. boiler afterheat secondary drying unit according to claim 1, it is characterized in that described upper box (51) and lower box (52) are provided with several intermediate connectors (55) along its length between the both sides, breather pipe (58) is arranged on the two-end part of upper box (51) and lower box (52).
3. boiler afterheat secondary drying unit according to claim 1 and 2 is characterized in that an end of described feeding groove (53) is provided with the spout (6) of feeding machine, and an end of blanking groove (54) is connected with the charging aperture of elevator (7).
4. boiler afterheat secondary drying unit according to claim 1 and 2 is characterized in that the lower end closed of described spout (6) is arranged on the upper box (51).
5. boiler afterheat secondary drying unit according to claim 1 and 2 is characterized in that being provided with in the described conveyer belt (5) drag chain conveyor (4).
6. boiler afterheat secondary drying unit according to claim 1 is characterized in that described pipe (8) and boiler exhaust gas road connecting portion are higher than smoke-intake pipe (3) and boiler exhaust gas road connecting portion.
7. according to claim 1 and 2 or 6 described boiler afterheat secondary drying units, it is characterized in that described upper box (51) is provided with heat-insulation layer (57) except all the other sides of a side towards feeding groove (53);
According to claim 1 and 2 or 6 described boiler afterheat secondary drying units, it is characterized in that described lower box (52) is provided with heat-insulation layer (57) except all the other sides of a side towards feeding groove (53).
8. boiler afterheat secondary drying unit according to claim 5 is characterized in that length and the amount of product throughput of described oven dry conveyer belt (5) is suitable.
9. according to claim 1 and 2 or 6 described boiler afterheat secondary drying units, it is characterized in that being provided with air exhausting device in the pipeline of described pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315953 CN202692623U (en) | 2012-07-03 | 2012-07-03 | Boiler waste heat secondary drying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220315953 CN202692623U (en) | 2012-07-03 | 2012-07-03 | Boiler waste heat secondary drying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202692623U true CN202692623U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220315953 Expired - Fee Related CN202692623U (en) | 2012-07-03 | 2012-07-03 | Boiler waste heat secondary drying device |
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| Country | Link |
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| CN (1) | CN202692623U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016062256A1 (en) * | 2014-10-24 | 2016-04-28 | 中盈长江国际新能源投资有限公司 | Method and apparatus for using excess heat from power plant flue gas to dry biomass fuel |
| CN106382809A (en) * | 2016-11-07 | 2017-02-08 | 广西南宁侨盛木业有限责任公司 | Drying device capable of recycling exhaust waste heat and dust of boiler |
-
2012
- 2012-07-03 CN CN 201220315953 patent/CN202692623U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016062256A1 (en) * | 2014-10-24 | 2016-04-28 | 中盈长江国际新能源投资有限公司 | Method and apparatus for using excess heat from power plant flue gas to dry biomass fuel |
| RU2666839C1 (en) * | 2014-10-24 | 2018-09-12 | Чжунин Чанцзян Интернэшнл Нью Энерджи Инвестмент Ко., Лтд. | Method and device for using excess heat from flue gas of a power plant for drying fuel from biomass |
| CN106382809A (en) * | 2016-11-07 | 2017-02-08 | 广西南宁侨盛木业有限责任公司 | Drying device capable of recycling exhaust waste heat and dust of boiler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130123 Termination date: 20130703 |