CN116459956A - High throughput split cyclone preheater - Google Patents
High throughput split cyclone preheater Download PDFInfo
- Publication number
- CN116459956A CN116459956A CN202310412224.2A CN202310412224A CN116459956A CN 116459956 A CN116459956 A CN 116459956A CN 202310412224 A CN202310412224 A CN 202310412224A CN 116459956 A CN116459956 A CN 116459956A
- Authority
- CN
- China
- Prior art keywords
- cyclone
- shell
- outer cylinder
- cylinder
- high throughput
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000007599 discharging Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 11
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000004568 cement Substances 0.000 abstract description 2
- 239000013072 incoming material Substances 0.000 abstract description 2
- 230000007704 transition Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000237942 Conidae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C7/00—Apparatus not provided for in group B04C1/00, B04C3/00, or B04C5/00; Multiple arrangements not provided for in one of the groups B04C1/00, B04C3/00, or B04C5/00; Combinations of apparatus covered by two or more of the groups B04C1/00, B04C3/00, or B04C5/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/20—Apparatus in which the axial direction of the vortex is reversed with heating or cooling, e.g. quenching, means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D13/00—Apparatus for preheating charges; Arrangements for preheating charges
- F27D2013/007—Apparatus for preheating charges; Arrangements for preheating charges using a rotary furnace
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Furnace Details (AREA)
Abstract
The invention relates to the field of cement production equipment, in particular to a high-throughput split-flow cyclone preheater which comprises a cyclone shell, a cyclone outer cylinder, a double-air-guide screw, a cyclone inner cylinder, a discharge disc and an air inlet pipe; the cyclone outer cylinder is fixedly arranged in the cyclone shell; according to the invention, by arranging the nested cyclone outer cylinder and the cyclone inner cylinder, a large amount of incoming material gas can be divided into two small batches and respectively enter the inner cyclone cylinder and the outer cyclone cylinder to be preheated and separated, so that the processing capacity of the material gas is greatly improved and the system cost is reduced under the condition of unchanged separation efficiency; according to the cyclone, the single air guide spiral and the double air guide spiral are arranged, so that the material gas enters the cyclone in a cyclone mode, the transition of the mixed gas entering the cyclone is particularly stable, and therefore interference turbulence is avoided.
Description
Technical Field
The invention relates to the field of cement production equipment, in particular to a high-throughput split cyclone preheater.
Background
Cyclone preheaters are used for separating fine substances from flowing gas by centrifugal force, and comprise a cylindrical shell, which is inclined towards the bottom, and a gas flow containing solid particles to be separated is cut directly from below a cover of the top closing shell, so that a swirling flow is formed in the shell, in the process, the particles are thrown against a wall under the action of centrifugal force, the particles are strongly decelerated there due to the action of friction force, the decelerated particles then slide downwards in a container, and enter a gas supply pipe or a collecting container entering the next lower separator through an outlet opening provided at the lower end of the separator shell, and the purified gas flow is again extracted from the separator shell through a gas outlet pipe arranged in the center of the upper cover;
the cyclone preheater system is composed of a plurality of units (four cyclone preheaters which are called four-stage cyclone preheaters in series, five cyclone preheaters which are called five-stage cyclone preheaters in series and the like) in combination, and the functions of preheating raw materials and decomposing partial carbonate are realized through the heat exchange between gas and solid and the separation effect of the cyclone;
however, the existing multi-stage cyclone preheating system is limited by the structure and the serial connection mode, so that the processing amount of materials in unit time is required to be further improved, the investment is large, the cost is high, and the improved processing amount is limited.
Disclosure of Invention
Therefore, the invention is made in view of the above problems, and the invention aims to divide a large amount of feed gas into two parts for preheating and separating by arranging the cyclone outer cylinder and the cyclone inner cylinder, and greatly improve the processing capacity of the feed gas under the condition of unchanged separation efficiency so as to solve the problems of small processing capacity of the feed in unit time of the prior multi-stage cyclone preheating system, and the invention realizes the above purposes by the following technical scheme:
a high throughput split-flow cyclone preheater comprises a cyclone shell, a cyclone outer cylinder, a double air guide screw, a cyclone inner cylinder, a discharge disc and an air inlet pipe; the cyclone outer cylinder is fixedly arranged in the cyclone shell; a blanking groove is formed in the circumferential wall of the cyclone outer cylinder; a double air guide screw is arranged between the cyclone outer cylinder and the cyclone shell, a cyclone inner cylinder is fixedly arranged in the cyclone outer cylinder, an inner air outlet is arranged at the upper end of the cyclone inner cylinder, and an inner discharging pipe is arranged at the lower end of the cyclone inner cylinder; an outer diversion exhaust port is arranged at the top end between the cyclone outer cylinder and the cyclone shell, and an inner diversion exhaust port is arranged at the top end between the cyclone outer cylinder and the cyclone inner cylinder; the discharging disc is fixedly arranged at the lower end of the cyclone outer cylinder, and the upper end of the discharging disc can be communicated with the outer outlet and the inner discharging pipe; the number of the air inlet pipes is four, the air inlet pipes are uniformly and fixedly arranged on the lower end face of the cyclone shell along the circumferential direction of the cyclone shell, and the upper ends of the air inlet pipes can be communicated with the interior of the cyclone shell.
Preferably, a plurality of the high throughput split cyclone preheaters are arranged one above the other to form a multi-stage cyclone preheating system.
Preferably, the lower end of the discharging groove penetrates through the wall of the cyclone outer cylinder and is communicated with the inside of the cyclone shell.
Preferably, the double wind-guiding screw is of a double-screw structure and is provided with two screw blades.
Preferably, one end of the outer diversion exhaust port is communicated with the cyclone outer cylinder, and the other end of the outer diversion exhaust port is communicated with one spiral blade outlet in the double air guiding spiral in the cyclone shell.
Preferably, the outer diversion exhaust port can guide part of the mixture gas in the cyclone shell between the cyclone outer cylinder and the cyclone inner cylinder through one spiral blade on the double-wind-guiding spiral.
Preferably, one end of the inner flow guiding exhaust port is communicated with the cyclone inner cylinder, the other end of the inner flow guiding exhaust port is communicated with the outlet of the other spiral blade in the double air guiding spiral in the cyclone shell, and the inner flow guiding exhaust port can guide part of mixed gas in the cyclone shell into the cyclone inner cylinder through the other spiral blade on the double air guiding spiral.
The invention has the beneficial effects that:
1. by arranging the nested cyclone outer cylinder and the cyclone inner cylinder, a large amount of incoming material gas can be divided into two small batches and respectively enter the inner cyclone cylinder and the outer cyclone cylinder to be preheated and separated, so that the processing capacity of the material gas is greatly improved and the system cost is reduced under the condition of unchanged separation efficiency;
2. by arranging the single air guide spiral and the double air guide spiral, the material gas enters the cyclone barrel in a cyclone mode, so that the transition of the mixed gas entering the cyclone barrel is particularly stable, and the interference turbulence is avoided;
3. the high-temperature gas flows inside and outside the cyclone outer cylinder or the cyclone inner cylinder, so that heat dissipated during the gas flowing is not lost, the temperature in the cyclone inner cylinder and the cyclone outer cylinder is higher, and the heat exchange efficiency is higher.
Drawings
FIG. 1 is a schematic diagram of a multi-stage series system of high throughput split cyclone preheaters according to the present invention in full semi-cutaway.
FIG. 2 is a schematic diagram of a high throughput split cyclone preheater in full semi-section.
Fig. 3 is a cross-sectional view taken along line A-A in fig. 2.
Fig. 4 is a sectional view taken along line B-B in fig. 3.
Description of the drawings: 110. a cyclone housing; 111. an outer diversion exhaust port; 112. an inner diversion exhaust port; 120. a cyclone outer cylinder; 121. discharging groove; 122. an outer discharge port; 130. double wind-guiding spirals; 140. a cyclone inner cylinder; 141. an inner air outlet; 142. an inner discharge pipe; 150. a discharge tray; 160. and (5) an air inlet pipe.
Detailed Description
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the present invention may be embodied in various forms, and thus the present invention is not limited to the embodiments described below, and in addition, components not connected to the present invention will be omitted from the drawings for the sake of more clarity of description of the present invention;
as shown in fig. 1, a plurality of high throughput split cyclone preheaters are arranged up and down to form a multi-stage cyclone preheating system;
as shown in fig. 2 and 3, a high throughput split cyclone preheater comprises: cyclone shell 110, cyclone outer cylinder 120, double wind-guiding screw 130, cyclone inner cylinder 140, discharge tray 150, wind inlet pipe 160;
the cyclone shell 110 is a cylindrical shell, a cyclone outer cylinder 120 is fixedly arranged in the cyclone shell 110, the cyclone outer cylinder 120 is approximately funnel-shaped, a lower trough 121 is arranged in the periphery wall of the cyclone outer cylinder 120, the lower end of the lower trough 121 penetrates through the cylinder wall of the cyclone outer cylinder 120 and is communicated with the inside of the cyclone shell 110, a double air guide spiral 130 is arranged between the cyclone outer cylinder 120 and the cyclone shell 110, the double air guide spiral 130 is of a double spiral structure and is provided with two spiral blades, a cyclone inner cylinder 140 is fixedly arranged in the cyclone outer cylinder 120, the cyclone inner cylinder 140 is of a cone shell structure, an inner air outlet 141 is arranged at the upper end of the cyclone inner cylinder 140, an inner discharge pipe 142 is arranged at the lower end of the cyclone inner cylinder 140, an outer guide discharge port 111 is arranged at the top end between the cyclone outer cylinder 120 and the cyclone shell 110, one end of the outer guide discharge port 111 is communicated with the cyclone outer cylinder 120, the other end of the outer guide discharge port 111 is communicated with the outlet of one spiral blade 130 in the cyclone shell 110, part of inner cylinder mixture gas in the cyclone shell 110 can be communicated with the inner cylinder inlet 112 through the double air guide blade on the double air guide spiral 130 and the other spiral blade on the cyclone shell 120, and the inner cylinder 140 can be communicated with the inner guide outlet 112 in the cyclone shell 112 through the other guide blade on the double air guide blade on the inner cylinder 112;
the discharge tray 150 is fixedly installed at the lower end of the cyclone casing 120, the discharge tray 150 is a hollow conical disc, the upper end of the discharge tray 150 can be communicated with the outer outlet 122 and the inner discharge pipe 142, the lower end of the discharge tray 150 is communicated with the 121 of the cyclone preheater at the next stage, the number of the air inlet pipes 160 is four, the air inlet pipes 160 are uniformly and fixedly installed on the lower end face of the cyclone casing 110 along the circumferential direction of the cyclone casing 110, the upper end of the air inlet pipe 160 can be communicated with the interior of the cyclone casing 110, and the lower end of the air inlet pipe 160 passes through the discharge tray 150 and is communicated with the interior of the cyclone casing 120 of the cyclone preheater at the next stage.
The working principle of the invention is as follows:
the high-temperature flue gas discharged from the rotary kiln or the decomposing furnace sequentially enters the cyclone preheater at each stage at the upper end from the air inlet pipe 160 in the cyclone preheater at the first stage at the lowest end, the material discharged from the pulverizer sequentially enters the cyclone preheater at each stage at the lower end from the air outlet pipe 121 on the cyclone preheater at the highest end, when the high-temperature flue gas enters between the cyclone housing 110 and the cyclone outer cylinder 120 from the air inlet pipe 160 in the cyclone preheater, the material just flows out from the air outlet pipe 121 in the cyclone outer cylinder 120, is impacted and dispersed by the high-temperature flue gas and starts to flow upwards along the two spirals on the double air guide spiral 130 along the flue gas between the cyclone housing 110 and the cyclone outer cylinder 120, the material and the gas are mixed and transferred in the flowing and dispersing process, the gas of the mixed material is finally respectively tangentially introduced into the cyclone outer cylinder 120 and the cyclone inner cylinder 140 through the outer air guide exhaust port 111 and the inner air guide exhaust port 112, after the cyclone outer cylinder 120 and the cyclone inner cylinder 140 are separated into the cyclone finished gas, the material flows out from the material outlet pipe 122 at the lower end of the cyclone outer cylinder 120 and the inner discharge pipe 142 at the lower end to the gas exhaust pipe 150 at the lower end of the cyclone outer cylinder 120 and flows out from the two spiral guide pipes 130 to the upper end or the cyclone outer cylinder 120 and reaches the upper end of the decomposing furnace, and reaches the decomposing furnace at the highest end, and the decomposing furnace is completely discharged from the upper end, and the decomposing furnace is finished.
Claims (7)
1. A high throughput split cyclone preheater, which comprises a cyclone shell (110), a cyclone outer cylinder (120), a double air guide screw (130), a cyclone inner cylinder (140), a discharge disc (150) and an air inlet pipe (160); the method is characterized in that: a cyclone outer cylinder (120) is fixedly arranged in the cyclone shell (110); a discharging groove (121) is formed in the circumferential wall of the cyclone outer cylinder (120); a double air guide screw (130) is arranged between the cyclone outer cylinder (120) and the cyclone shell (110), a cyclone inner cylinder (140) is fixedly arranged in the cyclone outer cylinder (120), an inner air outlet (141) is arranged at the upper end of the cyclone inner cylinder (140), and an inner discharging pipe (142) is arranged at the lower end of the cyclone inner cylinder (140); an outer diversion discharge port (111) is formed in the top end between the cyclone outer cylinder (120) and the cyclone shell (110), and an inner diversion discharge port (112) is formed in the top end between the cyclone outer cylinder (120) and the cyclone inner cylinder (140); the discharge disc (150) is fixedly arranged at the lower end of the cyclone outer cylinder (120), and the upper end of the discharge disc (150) can be communicated with the outer outlet (122) and the inner discharge pipe (142); the number of the air inlet pipes (160) is four, the air inlet pipes are uniformly and fixedly arranged on the lower end face of the cyclone shell (110) along the circumferential direction of the cyclone shell (110), and the upper ends of the air inlet pipes (160) can be communicated with the interior of the cyclone shell (110).
2. A high throughput split cyclone preheater as set forth in claim 1, wherein: a plurality of the high throughput split cyclone preheaters are arranged up and down to form a multi-stage cyclone preheating system.
3. A high throughput split cyclone preheater as set forth in claim 1, wherein: the lower end of the discharging groove (121) penetrates through the wall of the cyclone outer cylinder (120) and is communicated with the inside of the cyclone shell (110).
4. A high throughput split cyclone preheater as set forth in claim 1, wherein: the double wind-guiding screw (130) is of a double-screw structure and is provided with two screw blades.
5. A high throughput split cyclone preheater as set forth in claim 1, wherein: one end of the outer diversion exhaust port (111) is communicated with the cyclone outer cylinder (120), and the other end of the outer diversion exhaust port is communicated with one spiral blade outlet in the double air guiding spiral (130) in the cyclone shell (110).
6. A high throughput split cyclone preheater as set forth in claim 1, wherein: the outer diversion exhaust port (111) can guide part of mixed gas in the cyclone shell (110) between the cyclone outer cylinder (120) and the cyclone inner cylinder (140) through one spiral blade on the double air guiding spiral (130).
7. A high throughput split cyclone preheater as set forth in claim 1, wherein: one end of the inner flow guiding exhaust port (112) is communicated with the cyclone inner cylinder (140), the other end of the inner flow guiding exhaust port is communicated with the outlet of the other spiral blade in the double air guiding spiral (130) in the cyclone shell (110), and the inner flow guiding exhaust port (112) can guide part of mixed gas in the cyclone shell (110) into the cyclone inner cylinder (140) through the other spiral blade on the double air guiding spiral (130).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310412224.2A CN116459956A (en) | 2023-04-18 | 2023-04-18 | High throughput split cyclone preheater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310412224.2A CN116459956A (en) | 2023-04-18 | 2023-04-18 | High throughput split cyclone preheater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116459956A true CN116459956A (en) | 2023-07-21 |
Family
ID=87181874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310412224.2A Pending CN116459956A (en) | 2023-04-18 | 2023-04-18 | High throughput split cyclone preheater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116459956A (en) |
-
2023
- 2023-04-18 CN CN202310412224.2A patent/CN116459956A/en active Pending
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