CN114288704A - Pelleter cooling structure is used in sodium sulfide production - Google Patents
Pelleter cooling structure is used in sodium sulfide production Download PDFInfo
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- CN114288704A CN114288704A CN202210054174.0A CN202210054174A CN114288704A CN 114288704 A CN114288704 A CN 114288704A CN 202210054174 A CN202210054174 A CN 202210054174A CN 114288704 A CN114288704 A CN 114288704A
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Abstract
The invention discloses a cooling structure of a pelleter for producing sodium sulfide, which comprises a rotary drum, wherein a hollow rotary shaft penetrates through the center of the rotary drum, the rotary drum rotates around the rotary shaft, and a main water pipe penetrates through the rotary shaft; a plurality of water distribution rings are arranged in the rotary drum and are communicated with the main water pipe through a plurality of radial branch pipes, so that cooling water flowing through the main water pipe is introduced into the water distribution rings through the radial branch pipes; the water distribution circular ring is provided with a plurality of nozzles, and the water spraying direction of the nozzles is opposite to the rotating direction of the rotary drum. The cooling efficiency is improved, and the caking of sodium sulfide can be prevented.
Description
Technical Field
The invention relates to chemical equipment, in particular to a cooling structure of a pelleter for producing sodium sulfide.
Background
The current pelleter for producing 50% -60% of products by using sodium sulfide is usually a rotary drum pelleter, and the principle is that a semi-finished sodium sulfide solution is adhered to a drum surface from a material tray in the rotary drum rotating process, cooling water is introduced into the rotary drum, the cooling water exchanges heat with the inner wall of the rotary drum and the adhered sodium sulfide to cool and crystallize the sodium sulfide, and a crystallized thin slice sodium sulfide solid is cut by a scraper to form a flaky sodium sulfide product. The cooling water is introduced into the radial structure water spraying frame through the hollow shaft of the rotary drum, the cold water is sprayed out from the nozzles of the water spraying frame, the cold water is sprayed to the surface of the inner wall of the rotary drum to cool the drum surface, the cold water exchanges heat with the material film attached to the surface of the outer wall through the drum wall, the cooling medium after heat exchange is collected to the lower part of the rotary drum along the inner wall, continues to exchange heat with the material liquid contacted with the bottom of the rotary drum, and is discharged through the cooling water discharge pipe. This cooling water injection structure is owing to violently manage the distribution structure, has the water distribution uneven, and the jet stream perpendicular to rotary drum section of thick bamboo wall causes the dwell time of jet stream on the section of thick bamboo wall short, and the cooling effect is poor, and the energy consumption is high, can lead to the sodium sulfide piece caking when sodium sulfide solution temperature is higher.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a cooling structure of a pelleter for producing sodium sulfide.
A cooling structure of a pelleter for producing sodium sulfide comprises a rotary drum, wherein a hollow rotary shaft penetrates through the center of the rotary drum, the rotary drum rotates around the rotary shaft, and a main water pipe penetrates through the rotary shaft; a plurality of water distribution rings are arranged in the rotary drum and are communicated with the main water pipe through a plurality of radial branch pipes, so that cooling water flowing through the main water pipe is introduced into the water distribution rings through the radial branch pipes; the water distribution circular ring is provided with a plurality of nozzles, and the water spraying direction of the nozzles is opposite to the rotating direction of the rotary drum.
Optionally, a material tray is arranged below the rotary drum; cooling water enters the water distribution circular ring through the main water pipe and the branch pipe, and is sprayed onto the inner wall of the rotary drum from a nozzle of the water distribution circular ring; the nozzle comprises a spray pipe and a bearing section, the spray pipe is connected with the bearing section through a pipelineThe spray pipe is an arc-shaped closed pipeline, a cavity for cooling water to pass through is formed in the spray pipe, the bearing section is open, and a cooling channel is formed between the bearing section and the inner wall of the rotary drum; the distance between the cooling channel and the inner wall of the rotary drum is gradually reduced from the tail end of the spray pipe, and finally a spray opening is formed at the tail end of the bearing section; the spray pipe and the bearing section are integrally arc-shaped; cooling water sprayed out of the spray pipe flows along the cooling channel under the support of the support section; the size of the jet orifice is 3-5 CM; the radian of the bearing section is
The invention has the beneficial effects that: in the invention, the traditional radial structure water spraying frame is changed into a multilayer distributed water distribution ring structure, on one hand, the structure can more densely arrange multilayer water distribution rings to increase the cooling water quantity, on the other hand, the water distribution rings and the rotary drum are of a circumferential structure, and the water spraying direction is opposite to the rotating direction of the rotary drum, so that the cooling water sprayed by the nozzles is easier to form convection with the moving direction of the rotary drum, the relative moving distance between the rotary drum and the cooling water is increased, the convection improves the retention time of the sprayed water flow on the wall of the rotary drum, namely, the action time of the cooling water is prolonged, and the cooling efficiency is improved.
Drawings
FIG. 1 is a schematic view of a pellet mill;
FIG. 2 is a schematic view of a cooling configuration;
FIG. 3 is a schematic view of a nozzle configuration;
fig. 4 is a perspective view of the nozzle.
Detailed Description
The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention when taken in conjunction with the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not intended to be to scale, emphasis instead being placed upon illustrating the principles of the invention.
Referring to fig. 1 and 2, the tablet making machine for producing sodium sulfide of the present invention includes a rotary drum 1, a hollow rotary shaft 3 passing through the center of the rotary drum 1, the rotary drum 1 rotating around the rotary shaft 3, and a main water pipe 4 passing through the rotary shaft 3. A plurality of water distribution rings 2 are arranged in the rotary drum 1, the water distribution rings 2 are communicated with a main water pipe 4 through a plurality of radial branch pipes 5, so that cooling water flowing through the main water pipe 4 is introduced into the water distribution rings 2 through the radial branch pipes 5.
The water distribution ring 2 is provided with a plurality of nozzles 6, the water spraying direction of the nozzles 6 is opposite to the rotation direction of the rotary drum 1, and as shown in fig. 2, when the rotary drum 1 rotates counterclockwise, the water spraying direction is approximately clockwise, and the nozzles 6 spray cooling water on the inner wall of the rotary drum 1, so that the purpose of cooling the rotary drum 1 is achieved.
In the work, a charging tray 5 is arranged below the rotary drum 1, a semi-finished sodium sulfide solution enters the charging tray 5, the sodium sulfide solution in the charging tray 5 can be adhered to the outer wall of the rotary drum 1 in the rotation process of the rotary drum 1, cooling water enters the water distribution circular ring 2 through the main water pipe 4 and the branch pipe 5, and is sprayed to the inner wall of the rotary drum 1 from the nozzle 6 of the water distribution circular ring 2, so that the sodium sulfide on the rotary drum 1 is cooled and crystallized, and then the sodium sulfide on the rotary drum 1 is scraped off through a scraper, so that the tabletting process is completed.
In the invention, the traditional radial structure water spraying frame is changed into a multilayer distributed water distribution ring structure, on one hand, the structure can more densely arrange multilayer water distribution rings to increase the cooling water quantity, on the other hand, the water distribution rings and the rotary drum are of a circumferential structure, and the water spraying direction is opposite to the rotating direction of the rotary drum, so that the cooling water sprayed by the nozzles is easier to form convection with the moving direction of the rotary drum, the relative moving distance between the rotary drum and the cooling water is increased, the convection improves the retention time of the sprayed water flow on the wall of the rotary drum, namely, the action time of the cooling water is prolonged, and the cooling efficiency is improved.
Fig. 3 and 4 are schematic structural diagrams of the nozzle 6 of the present invention, the nozzle 6 includes a nozzle tube 6.1 and a bearing section 6.2, the nozzle tube 6.1 is an arc-shaped closed pipeline, a cavity 6.3 for cooling water to pass through is formed inside the closed pipeline, the bearing section 6.2 is semi-closed, a cooling channel 6.4 is formed between the bearing section 6.2 and the inner wall of the rotary drum 1, the distance between the cooling channel 6.4 and the inner wall of the rotary drum 1 is gradually reduced from the tail end of the nozzle tube 6.1, finally, a jet orifice 6.5 is formed at the tail end of the bearing section 6.2, the nozzle tube 6.1 and the bearing section 6.2 are integrally arc-shaped, so that the water flow direction in the cooling channel 6.4 is opposite to the rotation direction of the rotary drum 1.
The nozzle 6 is installed on the water distribution circular ring 2, the cooling water enters the spray pipe 6.1 from the upper part of the water distribution circular ring 2, the cooling water sprayed out of the spray pipe 6.1 flows along the cooling channel 6.4 under the support of the bearing section 6.2, the flowing direction of the cooling water is opposite to the rotating direction of the rotary drum 1, and due to the existence of the bearing section 6.2, the sprayed cooling water can be spread between the bearing section 6.2 and the inner wall of the rotary drum 1 on one hand, so that the contact area between the cooling water and the rotary drum 1 is increased; on the other hand, the support section 6.2 also extends the cooling water flow distance, i.e. the cooling water does not prematurely detach from the inner wall of the drum 1, thus increasing the action time of the cooling water with the drum 1. The contact area and the action time are improved after the bearing section is increased, so that the cooling efficiency of the rotary drum is greatly improved.
In production, the size of the injection port 6.5 (namely, the distance between the tail end of the bearing section 6.2 and the inner wall of the rotary drum 1) and the radian A of the bearing section have direct influence on the cooling efficiency, and in practical use, the cooling efficiency is greatly improved when the injection port 6.5 is 2CM-6CM, because the energy consumption is increased by the excessively small injection port, the injection amount of cooling water is reduced, the acting time of the cooling water is shortened by the excessively large injection port, and particularly, the energy consumption and the cooling efficiency can reach the optimal balance when the injection port 6.5 is 3CM-5 CM. The radian A of the bearing section influences the spreading area of the cooling water, the cooling water can be easily spread from the cooling channel 6.4 along with the increase of the radian, but the spread cooling water with the overlarge radian is difficult to contact with the inner wall of the rotary drum 1, so that the cooling effect is reduced, and the radian is preferably selected as
When the cooling water is sprayed out at a high speed, part of the cooling water flows out from a gap between the spray pipe 6.1 and the inner wall of the rotary drum 1, so that the utilization rate of the cooling water is reduced, and the sealing gasket 6.6 is further added at the gap between the spray pipe 6.1 and the inner wall of the rotary drum 1, so that good sealing is formed between the spray pipe 6.1 and the inner wall of the rotary drum 1, the cooling water can be prevented from flowing out from the gap, and the utilization rate of the cooling water is improved.
In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. The foregoing description is only a preferred embodiment of the invention, which can be embodied in many different forms than described herein, and therefore the invention is not limited to the specific embodiments disclosed above. And that those skilled in the art may, using the methods and techniques disclosed above, make numerous possible variations and modifications to the disclosed embodiments, or modify equivalents thereof, without departing from the scope of the claimed embodiments. Any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the scope of the technical solution of the present invention.
Claims (7)
1. A cooling structure of a pelleter for producing sodium sulfide is characterized by comprising a rotary drum, wherein a hollow rotary shaft penetrates through the center of the rotary drum, the rotary drum rotates around the rotary shaft, and a main water pipe penetrates through the rotary shaft; a plurality of water distribution rings are arranged in the rotary drum and are communicated with the main water pipe through a plurality of radial branch pipes, so that cooling water flowing through the main water pipe is introduced into the water distribution rings through the radial branch pipes; a plurality of nozzles are arranged on the water distribution circular ring, and the water spraying direction of the nozzles is opposite to the rotating direction of the rotary drum; the nozzle comprises a spray pipe and a bearing section, the spray pipe is an arc-shaped closed pipeline, a cavity for cooling water to pass through is formed in the spray pipe, the bearing section is open, and a cooling channel is formed between the bearing section and the inner wall of the rotary drum; the distance between the cooling channel and the inner wall of the rotary drum is gradually reduced from the tail end of the spray pipe, and finally, a spray opening is formed at the tail end of the bearing section.
2. The cooling structure according to claim 1, wherein a tray is provided below the drum.
3. The cooling structure according to claim 1, wherein cooling water is introduced into the water distribution ring through the main water pipe via the branch pipes, and is sprayed from the nozzles of the water distribution ring onto the inner wall of the drum.
4. The cooling structure of claim 1 wherein the nozzle is arcuate with respect to the support section.
5. The cooling structure according to claim 1, wherein the cooling water sprayed from the spray pipe flows along the cooling passage under the support of the support section.
6. The cooling structure according to claim 1, wherein the size of the injection port is 3CM to 5 CM.
7. The cooling structure of claim 1 wherein the support section has an arc of
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054174.0A CN114288704A (en) | 2022-01-18 | 2022-01-18 | Pelleter cooling structure is used in sodium sulfide production |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210054174.0A CN114288704A (en) | 2022-01-18 | 2022-01-18 | Pelleter cooling structure is used in sodium sulfide production |
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| CN114288704A true CN114288704A (en) | 2022-04-08 |
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| CN202210054174.0A Pending CN114288704A (en) | 2022-01-18 | 2022-01-18 | Pelleter cooling structure is used in sodium sulfide production |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2853163Y (en) * | 2005-08-30 | 2007-01-03 | 张健 | Flaking machine |
| CN2872276Y (en) * | 2006-01-25 | 2007-02-21 | 张健 | Spray thrower in rotary drum of sheeting machine |
| CN204198418U (en) * | 2014-11-12 | 2015-03-11 | 重庆市南川区晨曦化工有限公司 | Sulphur flaker rotary drum |
| CN106140018A (en) * | 2016-08-11 | 2016-11-23 | 安徽雪浪华宝化工装备科技有限公司 | Rotary drum spraying condensation type crystallization pelleter |
| CN212246220U (en) * | 2020-04-03 | 2020-12-29 | 陕西富化化工有限责任公司 | Preparation replaces sodium sulfide film-making roller that import PPS used |
| CN215028764U (en) * | 2021-04-14 | 2021-12-07 | 天津长芦海晶集团有限公司 | Rotary drum cooling crystallization pelleter |
| CN216987564U (en) * | 2022-01-18 | 2022-07-19 | 深州嘉信化工有限责任公司 | Pelleter cooling structure is used in sodium sulfide production |
-
2022
- 2022-01-18 CN CN202210054174.0A patent/CN114288704A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2853163Y (en) * | 2005-08-30 | 2007-01-03 | 张健 | Flaking machine |
| CN2872276Y (en) * | 2006-01-25 | 2007-02-21 | 张健 | Spray thrower in rotary drum of sheeting machine |
| CN204198418U (en) * | 2014-11-12 | 2015-03-11 | 重庆市南川区晨曦化工有限公司 | Sulphur flaker rotary drum |
| CN106140018A (en) * | 2016-08-11 | 2016-11-23 | 安徽雪浪华宝化工装备科技有限公司 | Rotary drum spraying condensation type crystallization pelleter |
| CN212246220U (en) * | 2020-04-03 | 2020-12-29 | 陕西富化化工有限责任公司 | Preparation replaces sodium sulfide film-making roller that import PPS used |
| CN215028764U (en) * | 2021-04-14 | 2021-12-07 | 天津长芦海晶集团有限公司 | Rotary drum cooling crystallization pelleter |
| CN216987564U (en) * | 2022-01-18 | 2022-07-19 | 深州嘉信化工有限责任公司 | Pelleter cooling structure is used in sodium sulfide production |
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Application publication date: 20220408 |