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CN-121994010-A - Solar energy-saving vertical drying tower

CN121994010ACN 121994010 ACN121994010 ACN 121994010ACN-121994010-A

Abstract

The invention discloses a solar energy-saving vertical drying tower, and relates to the technical field of mineral material drying. The invention adopts a vertical square structure of 3m multiplied by 10m, a 3mm thick steel plate is directly welded, an external simple hoop, an inner wall aluminum foil and an outer wall heat insulation cotton, the weight is reduced, the cost is low, the construction is easy, the heat insulation is good, 6 groups of Z-shaped labyrinth air channels are arranged in the vertical square structure, each group of guide straight plates with the length of 75 DEG and 10cm are arranged, the material Z-shaped slow falling is realized, a 2000m2 large-area solar heat collecting plate is configured, the low-temperature hot air with the temperature of 150 ℃ is preferentially provided, the natural gas temperature compensation is automatically started in cloudy days, the illumination is insufficient, the natural gas temperature is automatically compensated in rainy days, the hot air is stabilized at 120-180 ℃, and a double-section heat compensation air inlet, the hot air internal circulation, the material circulation reflux, the aluminum fin waste heat recovery, the refrigerant deep dehumidification heat exchange and the intelligent control system are adopted, and the efficient, energy conservation, stability and automatic drying are realized. The invention has the advantages of zero fuel gas consumption in sunny days, 70-90% of comprehensive energy saving rate, >95% of heat utilization rate, uniform drying without dead angle, no blocking, stable yield, small occupied area, environmental protection, suitability for high-efficiency energy-saving drying of mineral raw materials such as sand stone, potassium feldspar powder, iron powder and the like, and solves the problems of high energy consumption, incomplete drying, low automation degree, energy waste, uneven temperature and complex tower structure and high cost of the traditional equipment.

Inventors

  • YAN WEIMIN

Assignees

  • 闫卫民

Dates

Publication Date
20260508
Application Date
20260326

Claims (9)

  1. 1. The solar energy-saving vertical drying tower is characterized by comprising a square drying tower, an automatic feeding device, a Z-shaped labyrinth air duct, a double-section heat supplementing air inlet system, a hot air internal circulation device, a material circulating reflux device, a 2000m2 solar heat collecting system, a natural gas temperature supplementing system, an aluminum fin waste heat recovery device, a refrigerant deep dehumidification heat exchange device and an intelligent control system.
  2. 2. The drying tower according to claim 1, wherein the square drying tower is of a 3m multiplied by 10m vertical square structure, is formed by directly rolling and welding a Q235 steel plate with the thickness of 3mm, is externally provided with a simple steel hoop, is internally attached with an aluminum foil reflecting layer, and is externally wrapped with heat insulation cotton.
  3. 3. The drying tower according to claim 1, wherein 6 groups of the Z-shaped labyrinth air channels are arranged, and each group of the Z-shaped labyrinth air channels is provided with 13 guide straight plates with the length of 75 degrees and 10cm, and the guide straight plates are staggered left and right.
  4. 4. The drying tower according to claim 1, wherein the low-temperature hot air at 150 ℃ generated by the 2000m2 solar heat collecting plate is preferentially used for drying, and natural gas is not needed in sunny days.
  5. 5. The drying tower according to claim 1, wherein natural gas temperature compensation is automatically started in cloudy days, insufficient illumination and rainy days, and hot air is stabilized at 120-180 ℃.
  6. 6. The drying tower according to claim 1, wherein the hot air internal circulation device circulates or discharges automatically according to the water content of the hot air.
  7. 7. The drying tower according to claim 1, wherein the material circulation reflux device automatically returns and re-dries according to the water content.
  8. 8. The drying tower according to claim 1, wherein the aluminum fin waste heat recovery device recovers heat of the wet and hot waste gas, preheats fresh air, and the refrigerant deep dehumidification heat exchange device deeply removes moisture in air and re-heats circulating hot air.
  9. 9. The drying tower of claim 1, wherein the intelligent control system is configured to automatically feed, control temperature, control humidity, control production, control energy, and control heat exchange.

Description

Solar energy-saving vertical drying tower Technical Field The invention relates to the technical field of mineral material drying, in particular to high-efficiency energy-saving vertical drying equipment which utilizes a large-area solar heat collecting plate to provide low-temperature hot air, is assisted with natural gas temperature compensation, hot air internal circulation, labyrinth material falling, double-section heat compensation air inlet, material backflow, aluminum fin waste heat recovery, refrigerant deep dehumidification heat exchange and intelligent control, and is suitable for high-efficiency, energy-saving, stable and automatic drying of mineral raw materials with water content of about 8% such as sand stone, potassium feldspar powder and iron powder. Background The traditional drying equipment mostly adopts high-temperature hot air (more than 600 ℃), high energy consumption, low heat efficiency and large occupied area, the conventional vertical drying tower is high in material falling speed, insufficient in heat exchange and incomplete in drying, the traditional solar drying equipment is low in hot air temperature and unstable, a system which is used preferentially by large-area heat collection (2000 m < 2 >) and can meet the automatic natural gas temperature supplementing in drying and cloudy days by low-temperature hot air (150 ℃), the hot air is directly discharged and waste heat is seriously wasted, an aluminum fin waste heat recovery and refrigerant deep dehumidification heat exchange device for damp-heat waste gas is lacked, the energy utilization rate is low, the temperature in the tower is uneven due to single air inlet, the feeding is rough, easy to block materials and unstable in yield, an intelligent control and automatic operation mechanism is lacked, and the traditional tower mostly adopts thick steel plate and angle iron reinforcement, so that the cost is high, the construction is complex and the heat preservation construction is unfavorable. Disclosure of Invention The invention provides a solar energy-saving vertical drying tower, which takes a 2000m < 2 > solar heat collecting plate as a main heat source, preferably uses 150 ℃ low-temperature hot air for drying, automatically starts natural gas temperature compensation in cloudy days and rainy days to stabilize hot air at 120-180 ℃, adopts a light-weight tower body structure with 3mm thin steel plates for direct roll welding and forming, external simple hoops for reinforcement, internal aluminum foil heat dissipation prevention and external heat preservation cotton heat insulation, and is matched with a Z-shaped labyrinth air duct, hot air internal circulation, double-section heat compensation air inlet, material circulation reflux, aluminum fin waste heat recovery, refrigerant deep dehumidification heat exchange and intelligent control system to realize high-efficiency, energy-saving, stable, low-cost and all-weather automatic drying. Technical proposal The utility model provides a solar energy-conserving vertical drying tower, includes square drying tower, automatic feeding device, Z font maze wind channel, two sections heat supply air inlet system, hot-blast internal recycle device, material circulation reflux unit, 2000m2 solar energy collection system, natural gas temperature compensation system, aluminium matter fin waste heat recovery device, refrigerant degree of depth dehumidification heat transfer device and intelligent control system. 1. Square drying tower (3 mm steel plate structure, new emphasis) Vertical square structure, inner cavity size is 3m×3m, total height is 10m; adopting a Q235 thin steel plate with the thickness of 3mm to directly roll and weld for forming, and needing no angle iron reinforcement; A simple steel hoop is arranged at intervals of 1.5-2m outside, so that the structural strength and the tightness are ensured; The aluminum foil reflecting layer is stuck on the inner wall to prevent heat loss; The outer wall is wrapped with heat preservation cotton with the thickness of 100-150mm, further heat insulation and energy saving; the top is provided with a feeding interface; the bottom is provided with a main hot air inlet and a discharge hole; a middle section heat supplementing air inlet is arranged at the height of 5 m; The side surface of the top is provided with a hot air outlet; the side surface of the middle section is provided with a circulating air return port. 2. Automatic feeding device The device is arranged at a top feeding interface and comprises a roller type quantitative feeder (with the diameter of 300-400mm and the length of 1.5-2 m), a variable-frequency speed-regulating motor, a material level sensor and a computer control module; realize manual intervention and computer automatic control dual mode feed, accurate control feed rate avoids material to pile up the jam, stabilizes output. 3. Z-shaped labyrinth air duct The air channels are uniformly distributed along the height di