CN218469423U - Process system for preheating materials by using waste heat of drying machine - Google Patents
Process system for preheating materials by using waste heat of drying machine Download PDFInfo
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- CN218469423U CN218469423U CN202222589180.4U CN202222589180U CN218469423U CN 218469423 U CN218469423 U CN 218469423U CN 202222589180 U CN202222589180 U CN 202222589180U CN 218469423 U CN218469423 U CN 218469423U
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
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Abstract
The utility model introduces a process system for preheating materials by using waste heat of a dryer, which comprises a preheating bin, a distribution bin, the dryer, a bag-type dust collector, a condenser and an induced draft fan; the feed inlet of the distribution bin corresponds to the discharge outlet of a discharge screw conveyor of the preheating bin; the air inlet of the bag-type dust collector is connected with the exhaust port of the dryer tail gas, the air outlet of the bag-type dust collector is respectively connected with the air inlet joint pipe of the heat conduction screw shaft and the air inlet port of the bin bottom heat tracing pipe group through a pipeline, and the air inlet of the condenser is connected with the exhaust joint pipe of each heat conduction screw shaft and the exhaust port of the bin bottom heat tracing pipe group through a pipeline; the air inlet of the induced draft fan is connected with the air outlet of the condenser. The utility model discloses reasonable in process, the stable performance adopts the steam tail gas that desiccator production process produced to heat the material in preheating the feed bin, carries out reutilization to desiccator tail gas, reduces the quantity of heat source steam, and energy saving and emission reduction avoids the material to harden simultaneously to the drying output in the desiccator unit interval has been improved.
Description
Technical Field
The utility model relates to a desiccator waste heat utilization technical field, in particular to desiccator waste heat is used for material preheating's process systems.
Background
The paddle drying equipment system is mainly applied to the aspects of drying liquid materials, drying hydrous powdery materials, drying filter cake-shaped materials, drying mud-shaped materials and the like; the paddle dryer is the main equipment of the drying system, and the working principle of the paddle dryer is as follows: the water vapor or heat conducting oil is used as a heat source, the heat is indirectly transferred to the material to be dried through the heat conduction of the tubular shaft and the paddle, and the water content in the material to be dried is continuously evaporated until the water content in the material is reduced to the required range.
Thereby the process of the moisture heat absorption gasification that the material contained thereby reduces the material moisture content, this heat contains the temperature rise heat absorption and the latent heat of gasification two parts of moisture, accounts for 70% to 80% of the heat consumption of desiccator working process total, and the steam that present drying industry produced to the drying process is direct emission after removing dust mostly, leads to a large amount of heats to be wasted, if can be with containing the heat in the tail gas in the drying of material with a large amount of reduction energy resource consumptions again.
Disclosure of Invention
The utility model aims at overcoming prior art's not enough, providing a desiccator waste heat is used for the process system that the material preheated, and technology is reasonable, the heat of waste gas is utilized to stable performance, ability furthest to reach energy-conserving purpose.
The utility model adopts the technical proposal that:
a process system for preheating materials by using waste heat of a dryer comprises a preheating bin, a distribution bin, the dryer, a bag-type dust collector, a condenser and an induced draft fan;
the preheating bin is arranged at the front end of a feed inlet of the dryer and comprises a support, a hopper, a discharge spiral conveyor, a heat conduction spiral assembly and a bin bottom heat tracing pipe set; the hopper is arranged on the bracket, a discharge hole is arranged in the middle of the bottom of the hopper, and the discharge screw conveyor is arranged at the lower side of the hopper corresponding to the discharge hole; the heat conduction screw assembly is arranged in the bottom of the hopper, the heat conduction screw assembly comprises a plurality of heat conduction screw shafts which are arranged above a discharge port at the bottom of the hopper in parallel through bearing seats, the axial direction of each heat conduction screw shaft is perpendicular to the axial direction of the discharge screw conveyor, each heat conduction screw shaft is a hollow shaft, the spiral blades on the outer edge of each heat conduction screw shaft are disconnected from the middle part, the spiral directions of the spiral blades on the two sides of the middle part are opposite, the two ends of each heat conduction screw shaft extend out of the side wall of the hopper, one end of each heat conduction screw shaft is respectively connected with an air inlet joint pipe and a water outlet pipe through a three-way rotary joint, and the other end of each heat conduction screw shaft is connected with an exhaust joint pipe through a straight-through rotary joint; the bin bottom heat tracing pipe group is formed by a plurality of pipelines which are communicated and uniformly distributed on the lower side of the hopper bottom plate, one end of the bin bottom heat tracing pipe group, which is on the same side with the heat conduction screw shaft, is an air inlet port, and the other end of the bin bottom heat tracing pipe group is provided with a water drainage port and an air exhaust port;
the distribution bin is arranged at one end of the feeding hole of the dryer, and the feeding hole of the distribution bin corresponds to the discharging hole of the discharging screw conveyor; the air inlet of the bag-type dust collector is connected with the exhaust port of the dryer tail gas, the air outlet of the bag-type dust collector is connected with the air inlet joint pipe of the heat conduction spiral shaft and the air inlet port of the heat tracing pipe set at the bin bottom through pipelines, and pressure sensors are arranged on the pipelines;
the air inlet of the condenser is connected with the exhaust joint pipes of the heat conduction spiral shafts and the exhaust port of the bin bottom heat tracing pipe set through pipelines; the air inlet of the induced draft fan is connected with the air outlet of the condenser.
Specifically, an exhaust port of the bag-type dust collector is also connected with an air inlet of the condenser through a pipeline to form a bypass pipeline, and an automatic control valve group is arranged on the bypass pipeline; the automatic control valve group adjusts the opening and closing size of the bypass pipeline according to the pressure signal of the pressure sensor.
Specifically, a discharge spiral shaft is arranged in the distribution bin.
Specifically, drain pipes of a plurality of heat conduction screw shafts of the heat conduction screw assembly are connected to a drainage device; and the drainage port of the heat tracing pipe set at the bin bottom is also connected with a drainage device.
More specifically, the drainage device include filter valve, trap and the check valve that sets gradually on the pipeline, the pipeline both ends still are provided with stop valve A and stop valve B respectively, stop valve A and stop valve B both ends are parallelly connected and are set up the bypass pipeline, are provided with stop valve C on the bypass pipeline.
Specifically, flow control valves are arranged on the heat conduction spiral assembly and the pipelines at the air inlet end and the air outlet end of the heat tracing pipe set at the bin bottom; the steam flow is adjusted according to the material quantity and the production process requirement.
Specifically, a thermometer is arranged on a pipeline between the air outlet of the condenser and the air inlet of the induced draft fan.
Due to the adoption of the technical scheme, the utility model discloses have following superiority:
the utility model discloses reasonable in process, the stable performance adopts the steam tail gas that desiccator production process produced to heat the material in preheating the feed bin, carries out the reutilization to desiccator tail gas, reduces the quantity of heat source steam, and energy saving and emission reduction has improved the warehousing and transportation nature of material in the feed bin simultaneously, avoids the material to harden to the dry output in the desiccator unit interval has been improved.
Drawings
Fig. 1 is a schematic overall structure diagram of the present invention.
Fig. 2 is a schematic diagram of the preheating bin of the present invention.
Fig. 3 is a schematic view of the heat-tracing pipe set at the bottom of the bin of the present invention.
In the figure: 1-preheating bin, 11-bracket, 12-hopper, 13-discharging screw conveyor, 14-heat-conducting screw assembly, 141-heat-conducting screw shaft, 142-three-way rotary joint, 143-air inlet joint pipe, 144-water discharging pipe, 145-air discharging joint pipe, 146-straight-through rotary joint, 15-bin bottom heat tracing pipe set, 151-air inlet port, 152-water discharging port, 153-air discharging port, 2-distribution bin, 3-drier, 4-bag dust remover, 5-condenser, 6-induced draft fan, 7-pressure sensor, 8-automatic control valve set, 9-dewatering device, 91-stop valve A, 92-filter valve, 93-drain valve, 94-check valve, 95-stop valve B, 96-stop valve C, 10-flow control valve and 11-thermometer.
Detailed Description
The invention will be further explained below with reference to the drawings and examples, without limiting the scope of the invention, which is intended to protect all technical improvements within the scope of the invention.
The process system for preheating materials by using the waste heat of the drying machine shown in the attached drawings 1-3 comprises a preheating bin 1, a distribution bin 2, the drying machine 3, a bag-type dust collector 4, a condenser 5 and an induced draft fan 6.
The preheating bin 1 is arranged at the front end of a feed inlet of the dryer 3, and the preheating bin 1 comprises a support 11, a hopper 12, a discharge spiral conveyor 13, a heat conduction spiral assembly 14 and a bin bottom heat tracing pipe set 15; the hopper 12 is arranged on the bracket 11, a discharge hole is arranged in the middle of the bottom of the hopper 12, and the discharge screw conveyor 13 is arranged at the lower side of the hopper 12 corresponding to the discharge hole; the heat conduction screw assembly 14 is arranged in the bottom of the hopper 12, the heat conduction screw assembly 14 comprises a plurality of heat conduction screw shafts 141 which are arranged above a discharge port at the bottom of the hopper 12 in parallel through bearing seats, the axial direction of each heat conduction screw shaft 141 is vertical to the axial direction of the discharge screw conveyor 13, each heat conduction screw shaft 141 is a hollow shaft, screw blades on the outer edge of each heat conduction screw shaft 141 are disconnected from the middle part, the screw blades on the two sides of the middle part are arranged in opposite rotating directions, the two ends of each heat conduction screw shaft 141 extend out of the side wall of the hopper 12, one end of each heat conduction screw shaft 141 is respectively connected with an air inlet joint pipe 143 and a water outlet pipe 144 through a three-way rotary joint 142, and the other end of each heat conduction screw shaft is connected with an exhaust joint pipe 145 through a three-way rotary joint 146; the heat-tracing pipe group 15 at the bottom of the bin is a plurality of pipelines which are communicated and uniformly distributed at the lower side of the bottom plate of the hopper 12, one end of the heat-tracing pipe group 15 at the same side with the heat-conducting screw shaft 141 is an air inlet port 151, and the other end is provided with a water outlet port 152 and an air outlet port 153.
The distribution bin 2 is arranged at one end of a feeding hole of the drying machine 3, the feeding hole of the distribution bin 2 corresponds to a discharging hole of the discharging screw conveyor 13, and a discharging screw shaft is arranged in the distribution bin 2; an air inlet of the bag-type dust collector 4 is connected with a tail gas exhaust port of the dryer 3, an air outlet of the bag-type dust collector 4 is respectively connected with an air inlet joint pipe 143 of the heat conduction screw shaft 141 and an air inlet port 151 of the heat tracing pipe set 15 at the bin bottom through a pipeline, and a pressure sensor 7 is arranged on the pipeline; the exhaust port of the bag-type dust collector 4 is also connected with the air inlet of the condenser 5 through a pipeline to form a bypass pipeline, and an automatic control valve group 8 is arranged on the bypass pipeline; the automatic control valve group 8 adjusts the opening and closing size of the bypass pipeline according to the pressure signal of the pressure sensor 7.
The air inlet of the condenser 5 is connected with the exhaust joint pipe 145 of each heat conduction screw shaft 141 and the exhaust port 153 of the bin bottom heat tracing pipe set 15 through pipelines; the air inlet of the draught fan 6 is connected with the air outlet of the condenser 5 through a pipeline, and a thermometer 11 is arranged on the pipeline.
Preferably, the water discharge pipes 144 of the plurality of heat conduction screw shafts 141 of the heat conduction screw assembly 14 are connected to the water drainage device 9; the drainage port 152 of the heat tracing pipe set 15 at the bin bottom is also connected with a drainage device 9; the drainage device 9 comprises a filter valve 92, a drainage valve 93 and a check valve 94 which are sequentially arranged on a pipeline, wherein two ends of the pipeline are respectively provided with a stop valve A91 and a stop valve B95, two ends of the stop valve A91 and two ends of the stop valve B95 are parallelly connected with a bypass pipeline, and the bypass pipeline is provided with a stop valve C96.
Preferably, flow control valves 10 are arranged on the pipelines at the air inlet end and the air outlet end of the heat conduction spiral assembly 14 and the heat tracing pipe set 15 at the bin bottom; the steam flow is adjusted according to the material quantity and the production process requirement.
When the preheating device works, tail gas steam generated in the drying process of the dryer 3 enters the bag-type dust collector 4 for purification and then respectively enters each heat conduction screw shaft 141 and the bin bottom heat tracing pipe group 15, and the flow control valves 10 on the pipelines of the air inlet end and the air outlet end of the heat conduction screw assemblies 14 and the bin bottom heat tracing pipe group 15 are adjusted according to the quantity of materials and the requirements of the production process to control the steam flow so as to heat the materials in the preheating bin 1; each heat conduction screw shaft 141 is driven to rotate by a motor, when materials are heated, because the screw blades on two sides of each heat conduction screw shaft 141 are opposite in rotation direction, the materials are pushed to a discharge port in the middle of the hopper 12 during rotation, and the materials are conveyed to the distribution bin 2 through the discharge screw conveyor 13 and then enter the dryer 3 for drying; the redundant steam in the heat conduction screw shaft 141 and the bin bottom heat tracing pipe set 15 enters the condenser 5, and a small amount of condensed non-condensable gas is discharged through the induced draft fan 6; the condensed water in the heat conduction screw shaft 141 and the bin bottom heat tracing pipe set 15 is discharged through the drainage device 9 respectively.
When the tail gas steam discharge amount of the dryer 3 is large and the heat of the preheating material bin 1 is saturated, the pressure sensor 7 exceeds a set value, the flow of the bypass pipeline is increased by the automatic control valve group 8, part of the heat directly enters the condenser 5 through the bypass pipeline for treatment, and the stability of the air pressure in the tail gas pipeline and the dryer 3 is kept.
The detailed part of the utility model is the prior art.
The embodiments selected for the purpose of disclosing the invention, are presently considered to be suitable, it being understood, however, that the invention is intended to cover all variations and modifications of the embodiments, which fall within the scope of the concept and the utility model.
Claims (7)
1. A process system for using waste heat of a dryer for preheating materials is characterized by comprising a preheating bin, a distribution bin, the dryer, a bag-type dust collector, a condenser and an induced draft fan;
the preheating bin is arranged at the front end of a feed inlet of the dryer and comprises a support, a hopper, a discharge spiral conveyor, a heat conduction spiral assembly and a bin bottom heat tracing pipe set; the hopper is arranged on the bracket, a discharge hole is arranged in the middle of the bottom of the hopper, and the discharge screw conveyor is arranged at the lower side of the hopper corresponding to the discharge hole; the heat conduction screw assembly is arranged in the bottom of the hopper, the heat conduction screw assembly comprises a plurality of heat conduction screw shafts which are arranged above a discharge port at the bottom of the hopper in parallel through bearing seats, the axial direction of each heat conduction screw shaft is perpendicular to the axial direction of the discharge screw conveyor, each heat conduction screw shaft is a hollow shaft, the spiral blades on the outer edge of each heat conduction screw shaft are disconnected from the middle part, the spiral directions of the spiral blades on the two sides of the middle part are opposite, the two ends of each heat conduction screw shaft extend out of the side wall of the hopper, one end of each heat conduction screw shaft is respectively connected with an air inlet joint pipe and a water outlet pipe through a three-way rotary joint, and the other end of each heat conduction screw shaft is connected with an exhaust joint pipe through a straight-through rotary joint; the bin bottom heat tracing pipe group is formed by a plurality of pipelines which are communicated and uniformly distributed on the lower side of the hopper bottom plate, one end of the bin bottom heat tracing pipe group, which is on the same side with the heat conduction screw shaft, is an air inlet port, and the other end of the bin bottom heat tracing pipe group is provided with a water drainage port and an air exhaust port;
the distribution bin is arranged at one end of the feeding hole of the dryer, and the feeding hole of the distribution bin corresponds to the discharging hole of the discharging screw conveyor; the air inlet of the bag-type dust collector is connected with the exhaust port of the dryer tail gas, the air outlet of the bag-type dust collector is connected with the air inlet joint pipe of the heat conduction spiral shaft and the air inlet port of the heat tracing pipe set at the bin bottom through pipelines, and pressure sensors are arranged on the pipelines;
the air inlet of the condenser is connected with the exhaust joint pipes of the heat conduction spiral shafts and the exhaust port of the heat tracing pipe set at the bin bottom through pipelines; the air inlet of the induced draft fan is connected with the air outlet of the condenser.
2. The process system for preheating materials by using the waste heat of the dryer as claimed in claim 1, wherein: the exhaust port of the bag-type dust collector is connected with the air inlet of the condenser through a pipeline to form a bypass pipeline, and an automatic control valve group is arranged on the bypass pipeline.
3. The process system for preheating materials by using the waste heat of the dryer as claimed in claim 1, wherein: and a discharge screw shaft is arranged in the distribution bin.
4. The process system for preheating materials by using waste heat of the dryer according to claim 1, wherein the process system comprises: drain pipes of a plurality of heat conduction spiral shafts of the heat conduction spiral assembly are connected into a drainage device; the drainage port of the heat tracing pipe set at the bin bottom is also connected with a drainage device.
5. The process system for preheating materials by using waste heat of the dryer as claimed in claim 4, wherein: the drainage device comprises a filter valve, a drainage valve and a check valve which are sequentially arranged on a pipeline, wherein two ends of the pipeline are respectively provided with a stop valve A and a stop valve B, two ends of the stop valve A and two ends of the stop valve B are parallelly connected to form a bypass pipeline, and the bypass pipeline is provided with a stop valve C.
6. The process system for preheating materials by using the waste heat of the dryer as claimed in claim 1, wherein: flow control valves are arranged on the pipelines of the air inlet end and the air outlet end of the heat conduction spiral assembly and the heat tracing pipe set at the bin bottom.
7. The process system for preheating materials by using waste heat of the dryer according to claim 1, wherein the process system comprises: and a thermometer is arranged on a pipeline between the air outlet of the condenser and the air inlet of the draught fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222589180.4U CN218469423U (en) | 2022-09-29 | 2022-09-29 | Process system for preheating materials by using waste heat of drying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222589180.4U CN218469423U (en) | 2022-09-29 | 2022-09-29 | Process system for preheating materials by using waste heat of drying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218469423U true CN218469423U (en) | 2023-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222589180.4U Active CN218469423U (en) | 2022-09-29 | 2022-09-29 | Process system for preheating materials by using waste heat of drying machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218469423U (en) |
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- 2022-09-29 CN CN202222589180.4U patent/CN218469423U/en active Active
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