CN216011625U

CN216011625U - Flat plate drying equipment heated by heat conduction oil

Info

Publication number: CN216011625U
Application number: CN202122387087.0U
Authority: CN
Inventors: 蒋应梯
Original assignee: Zhejiang Academy of Forestry
Current assignee: Zhejiang Academy of Forestry
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-03-11
Anticipated expiration: 2031-09-23

Abstract

A flat plate drying device heated by heat conduction oil is composed of a flat plate dryer and a cylindrical heat conduction oil heater, wherein a rectangular heating chamber is built by refractory bricks, a heat storage refractory brick column is arranged in the heating chamber, a heating oil bath is arranged above the heating chamber, a heating oil bath partition plate is arranged in the oil bath to enable the heat conduction oil to move along a U-shaped path, a heating plate is arranged at the top of the heating oil bath, a drying chamber is arranged above the heating plate, an annular chain plate conveyor is arranged in the drying chamber, a plurality of scraping plates vertical to the chain plates are alternately welded on the chain plates at proper intervals, and the scraping plates scrape and push materials to move on the heating plate and dry; the distance between the two scraping plates is 8-13 cm, the length of the scraping plates is 10-15 cm, the width of the scraping plates is 5-8 cm, and the scraping plates on two adjacent chain plates are staggered with the gap; the heat conducting oil heater is a cylindrical vertical tubular heat exchanger, and the flue gas is used for heating heat conducting oil and then the heat conducting oil is used for heating and drying materials.

Description

Flat plate drying equipment heated by heat conduction oil

One, the technical field

The utility model relates to a drying equipment of material, especially a dull and stereotyped drying equipment with conduction oil heating.

Second, background Art

In the production process of chemical industry, food industry and the like, granular or powdery wet materials are often required to be dried, such as airflow drying and fluidized bed drying or fluidized bed drying, and because the drying medium of the drying equipment must be in direct contact with the materials to be dried, the drying medium pollutes the prepared products and affects the quality of the products. For example, wet powdered activated carbon is dried, hot air is used as a drying medium at present, and airflow drying or fluidized bed drying equipment is adopted, so that the heating efficiency is low, and the energy consumption is high; in addition, a large amount of high-temperature activated tail gas is generated in the activation process of producing the activated carbon and is usually directly discharged to the atmosphere, so that heat energy waste is caused, and heat pollution is caused to the atmospheric environment. There are some patents reporting on drying equipment using waste heat of flue gas, such as "continuous drying equipment using waste heat of flue gas to dry wet charcoal" in application No. 201820056159.9, which is characterized in that flue gas is used to heat a drying disk to dry the material, and the temperature of flue gas is high, and only suitable for high temperature resistant materials. Based on the above background, the utility model provides a dull and stereotyped drying equipment with conduction oil heating, this drying equipment can be according to the temperature resistant characteristic of waiting to dry the material, controls suitable heat conduction oil temperature through adjusting the gas volume, avoids waiting to dry the material problem rotten because of the high temperature.

Third, the invention

The utility model discloses a dull and stereotyped drying equipment with conduction oil heating, it comprises dull and stereotyped desiccator and cylindrical conduction oil heater two parts, wherein: the flat plate dryer consists of a gas burner (1), a discharge screw (2), a chain plate supporting chain wheel (3), a scraper type rotary feeder (4), a feeding hopper (5), a heat storage refractory brick column (6), an oil bath heating plate (7), a heating chamber (8), a scraping plate (9), a chain plate (10), a drying chamber top plate (11) and a moisture outlet (12). The structure of the flat plate dryer is characterized in that: a rectangular heating chamber (8) built by refractory bricks, heat storage refractory brick columns (6) are arranged in the heating chamber according to an equilateral triangle, a heating oil bath is arranged above the heating chamber, a heating oil bath partition plate (27) is arranged in the heating oil bath to enable heat conduction oil to move along a U-shaped path so as to prolong the heating time of flue gas, a heating plate (7) is arranged at the top of the heating oil bath, and the heating oil bath and the heating plate are made of stainless steel; a drying chamber is arranged above the heating plate, the length of the drying chamber is 20-30 meters, the width of the drying chamber is 1.0-1.5 meters, one end of the top of the drying chamber is provided with a feeding hopper (5), and a scraper type rotary feeder (4) is arranged in the feeding hopper; set up the annular chain plate conveying mechanism who carries the material in the drying chamber, its structural feature is: a transmission shaft (20) is arranged between drying chamber shells (17) on two sides, the transmission shaft is installed on the drying chamber shells (17) through a bearing (18), chain plate supporting chain wheels (3) are installed at two ends of the transmission shaft (20), a chain (21) is installed on the chain plate supporting chain wheels, chain plates (10) are installed on the chain, a plurality of scraping plates (9) which are perpendicular to the chain plates are welded on each chain plate at proper intervals in an alternating mode, the distance between the two scraping plates is 8-13 cm, the length of each scraping plate is 10-15 cm, the width of each scraping plate is 5-8 cm, and the scraping plates on two adjacent chain plates are arranged in a staggered mode with gaps; one end of one of the transmission shafts is provided with a transmission chain wheel (19), the transmission chain wheel is driven by a driving motor through a speed reducer through a chain to enable the chain plates (10) to do annular linear motion, a scraping plate on each chain plate can scrape and push materials to be dried into the drying chamber at a constant speed, the materials are gradually scraped and pushed towards the discharge port end of the drying chamber and play a role of stirring, the materials finally fall into the discharge screw (2), the discharge screw (2) is arranged outside the heating chamber and below the discharge port of the drying chamber, and the discharge screw is driven by the speed regulating motor through the speed reducer to perform continuous discharge; the other end of the top of the drying chamber is provided with a moisture discharge port (12) which is discharged to the outdoor atmosphere through a connecting pipeline.

The heat conducting oil heater is a cylindrical vertical tubular heat exchanger and comprises a heat conducting oil heater shell (13), a heat conducting oil outlet (14) of the heat conducting oil heater, a top flue gas partition plate (15), a heat conducting oil adding port (16) and heat conducting oil heating tubular columns (22), wherein the heat conducting oil heating tubular columns (22) which are arranged according to an equilateral triangle are arranged in the heat conducting oil heater shell (13), heat conducting oil runs between the tubular columns, and three layers of heat conducting oil guide baffles are arranged between the heat conducting oil heating tubular columns; in the flue gas walking pipe, a top flue gas baffle (15) and a bottom flue gas baffle (28) are respectively arranged at the top and the bottom of the heat-conducting oil heater, so that the heating flue gas walks along an S-shaped path to increase the flow of the flue gas in the heater and prolong the heat transfer time of the flue gas to the heat-conducting oil; a flue gas inlet (29) is arranged at the bottom of the heat conducting oil heater and is connected with a heating flue gas outlet (30) of the flat plate dryer; a circulating heat conducting oil inlet (23) of the heat conducting oil heater is connected with a heat conducting oil outlet (24) of the heating oil bathtub; a circulating pump is arranged between a heat conduction oil outlet (14) of the heat conduction oil heater and a heat conduction oil inlet (25) of the heating oil bathtub, and the three are connected to enable heat conduction oil to flow circularly.

Description of the drawings

Fig. 1 is a schematic view of a sectional view of an upright surface of a flat plate drying device heated by heat conduction oil according to the present invention, wherein 1 is a gas burner, 2 is a discharge screw, 3 is a chain plate supporting sprocket, 4 is a scraper-type rotary feeder, 5 is a hopper, 6 is a heat storage refractory brick column, 7 is an oil bath heating plate, 8 is a heating chamber, 9 is a scraping plate, 10 is a chain plate, 11 is a drying chamber top plate, 12 is a moisture discharge port, 13 is a heat conduction oil heater casing, 14 is a heat conduction oil discharge port of a heat conduction oil heater, 15 is a top flue gas baffle, and 16 is a heat conduction oil addition port; FIG. 2 is a schematic sectional view of section A-A of FIG. 1, wherein 17 is a drying chamber housing, 18 is a bearing, 19 is a driving sprocket, 20 is a driving shaft, 21 is a chain, and the rest parts are as described above; FIG. 3 is a schematic cross-sectional view of section B-B of FIG. 1, with the parts illustrated above; FIG. 4 is a schematic sectional view of the cross section C-C in FIG. 1, where 22 is a heat transfer oil heating tube array, 23 is a circulating heat transfer oil inlet of a heat transfer oil heater, 24 is a heat transfer oil outlet of a heating oil bathtub, 25 is a heat transfer oil inlet of a heating oil bathtub, 26 is a heating oil bath tub shell, 27 is a heating oil bathtub partition, and the rest parts are as described above; FIG. 5 is a schematic sectional view of the cross section D-D in FIG. 1, wherein 28 is a bottom flue gas separator, 29 is a flue gas inlet of a conduction oil heater, 30 is a heated flue gas outlet of a flat plate dryer, and the rest of the components are as described above.

Fifth, detailed description of the invention

A flat plate drying equipment with conduction oil heating is implemented like this and carries out drying operation, combines figure 1 to explain as follows: the drying equipment consists of a flat plate dryer and a cylindrical heat conducting oil heater, wherein a rectangular heating chamber (8) is built by refractory bricks, heat storage refractory brick columns (6) are arranged in the heating chamber according to an equilateral triangle, a heating oil bath is arranged above the heating chamber, a heating oil bath partition plate (27) is arranged in the oil bath, so that the heat conducting oil can run along a U-shaped path to prolong the heating time by flue gas, a heating plate (7) is arranged at the top of the heating oil bath, and the heating oil bath and the heating plate are made of stainless steel; a drying chamber is arranged above the heating plate, the length of the drying chamber is 20-30 meters, the width of the drying chamber is 1.0-1.5 meters, one end of the top of the drying chamber is provided with a feeding hopper (5), and a scraper type rotary feeder (4) is arranged in the feeding hopper; set up the annular chain plate conveying mechanism who carries the material in the drying chamber, its structural feature is: a transmission shaft (20) is arranged between drying chamber shells (17) on two sides, the transmission shaft is installed on the drying chamber shells (17) through a bearing (18), chain plate supporting chain wheels (3) are installed at two ends of the transmission shaft (20), a chain (21) is installed on the chain plate supporting chain wheels, chain plates (10) are installed on the chain, a plurality of scraping plates (9) which are perpendicular to the chain plates are welded on each chain plate at proper intervals in an alternating mode, the distance between the two scraping plates is 8-13 cm, the length of each scraping plate is 10-15 cm, the width of each scraping plate is 5-8 cm, and the scraping plates on two adjacent chain plates are arranged in a staggered mode with gaps; one end of one of the transmission shafts is provided with a transmission chain wheel (19), the transmission chain wheel is driven by a driving motor through a speed reducer through a chain to enable the chain plates (10) to do annular linear motion, a scraping plate on each chain plate can scrape and push materials to be dried into the drying chamber at a constant speed, the materials are gradually scraped and pushed towards the discharge port end of the drying chamber and play a role of stirring, the materials finally fall into the discharge screw (2), the discharge screw (2) is arranged outside the heating chamber and below the discharge port of the drying chamber, and the discharge screw is driven by the speed regulating motor through the speed reducer to perform continuous discharge; the other end of the top of the drying chamber is provided with a moisture discharge port (12) which is discharged to the outdoor atmosphere through a connecting pipeline. The heat conducting oil heater is a cylindrical vertical tubular heat exchanger, heat conducting oil heating tubular columns (22) which are arranged according to an equilateral triangle are arranged in a shell (13) of the heat conducting oil heater, heat conducting oil runs between the tubular columns, and three layers of heat conducting oil guide baffles are arranged between the heat conducting oil heating tubular columns; in the flue gas walking pipe, a top flue gas baffle (15) and a bottom flue gas baffle (28) are respectively arranged at the top and the bottom of the heat-conducting oil heater, so that the heating flue gas walks along an S-shaped path to increase the flow of the flue gas in the heater and prolong the heat transfer time of the flue gas to the heat-conducting oil; a flue gas inlet (29) is arranged at the bottom of the heat conducting oil heater and is connected with a heating flue gas outlet (30) of the flat plate dryer; a circulating heat conducting oil inlet (23) of the heat conducting oil heater is connected with a heat conducting oil outlet (24) of the heating oil bathtub; a circulating pump is arranged between a heat conduction oil outlet (14) of the heat conduction oil heater and a heat conduction oil inlet (25) of the heating oil bathtub, and the three are connected to enable heat conduction oil to flow circularly.

When drying, heat conducting oil is injected into a heat conducting oil heater through a heat conducting oil circulating pump and is filled, the circulating pump is continuously operated to enable the heat conducting oil to flow, then a gas burner is ignited, the heat conducting oil is heated by flue gas generated by combustion, the temperature of the heat conducting oil is determined according to the temperature resistance characteristic of the material to be dried, the material to be dried is added into a charging hopper (5) when the temperature of the heat conducting oil reaches the required temperature, a driving motor of a scraper type rotary feeder (4) is started, the material to be dried is added onto a chain plate of a flat plate dryer, the driving motor of the chain plate is started to enable the chain plate (10) to do annular linear motion, a scraper plate on the chain plate can scrape and push the material to an oil bath heating plate (7) of a drying chamber at a constant speed and gradually scrape and push the material to a discharge port end, the material is gradually heated and dried, and the dried material falls into a discharge spiral (2) from the discharge port, then a speed regulating motor is used for driving a discharging screw through a speed reducer to continuously discharge; according to the sampling detection result of the moisture content of the material output by the discharging screw, the proper rotating speed of a chain plate driving motor is adjusted and determined so as to enable the moisture content of the dried material to meet the requirement; the water vapor generated in the process of heating and drying the materials is collected to a moisture discharge port (12) and is guided to the outdoor for emptying through a connecting pipeline. The above is a specific embodiment of the drying apparatus.

Claims

1. The utility model provides a dull and stereotyped drying equipment with conduction oil heating which characterized in that: the drying equipment consists of a flat plate dryer and a cylindrical heat-conducting oil heater, wherein the flat plate dryer consists of a gas burner (1), a discharge screw (2), a chain plate supporting chain wheel (3), a scraper-type rotary feeder (4), a feeding hopper (5), heat-storage refractory brick columns (6), an oil bath heating plate (7), a heating chamber (8), a scraper plate (9), a chain plate (10), a drying chamber top plate (11) and a moisture discharge port (12), the heating chamber (8) is built into a cuboid by refractory bricks, the heat-storage refractory brick columns (6) are arranged in the heating chamber according to an equilateral triangle, a heating oil bath is arranged above the heating chamber, a heating oil bath partition plate (27) is arranged in the oil bath, so that the heat-conducting oil bath can move along a U-shaped path, the heating plate (7) is arranged at the top of the heating oil bath, the drying chamber is arranged above the heating plate, and the length of the drying chamber is 20-30 meters, the width is 1.0-1.5 m, a feeding hopper (5) is arranged at one end of the top of the drying chamber, and a scraper type rotary feeder (4) is arranged in the feeding hopper; the drying chamber is internally provided with an annular chain plate conveying mechanism for conveying materials, a transmission shaft (20) is arranged between drying chamber shells (17) on two sides and is installed on the drying chamber shells (17) through a bearing (18), chain plate supporting chain wheels (3) are installed at two ends of the transmission shaft (20), a chain (21) is installed on the chain plate supporting chain wheels, chain plates (10) are installed on the chain, a plurality of scraping plates (9) which are vertical to the chain plates are welded on each chain plate at proper intervals in an alternating mode, the distance between the two scraping plates is 8-13 cm, the length of each scraping plate is 10-15 cm, the width of each scraping plate is 5-8 cm, and the scraping plates on two adjacent chain plates are arranged in a staggered mode with gaps; one end of one of the transmission shafts is provided with a transmission chain wheel (19), a discharge screw (2) is arranged outside the heating chamber and below a discharge port of the drying chamber, and the other end of the top of the drying chamber is provided with a moisture discharge port (12).

2. The flat plate drying apparatus heated with conduction oil according to claim 1, wherein: the cylindrical heat conduction oil heater is a vertical tubular heat exchanger, the heat exchanger is composed of a heat conduction oil heater shell (13), a heat conduction oil outlet (14) of the heat conduction oil heater, a top flue gas partition plate (15), a heat conduction oil adding port (16) and heat conduction oil heating tubes (22), the heat conduction oil heating tubes (22) arranged according to an equilateral triangle are arranged in the heat conduction oil heater shell (13), heat conduction oil runs between the tubes, and three layers of heat conduction oil guide baffles are arranged between the heat conduction oil heating tubes; in the flue gas walking pipe, a top flue gas baffle (15) and a bottom flue gas baffle (28) are respectively arranged at the top and the bottom of the heat conducting oil heater, so that the heating flue gas walks an S-shaped path; a flue gas inlet (29) is arranged at the bottom of the heat conducting oil heater and is connected with a heating flue gas outlet (30) of the flat plate dryer; a circulating heat conducting oil inlet (23) of the heat conducting oil heater is connected with a heat conducting oil outlet (24) of the heating oil bathtub; a circulating pump is arranged between a heat conduction oil outlet (14) of the heat conduction oil heater and a heat conduction oil inlet (25) of the heating oil bathtub, and the three are connected to enable heat conduction oil to flow circularly.