Applications:
It can be widely used in drying board-shaped materials in fields of new-generation building materials, environmental protection, energy and etc. such as paper-coated gypsum-board, gypsum-board for decoration, rockwool sound-absorbing board, Eternite board and all kinds of fiber boards formed by means of extrusion or compaction process.
Product Introduction:
Based on horizontally-drying technology introduced from foreign country (Germany) and in combination with traditional longitudinally-drying technology, we have developed this large-scale continuously-conveying dryer (unit), which It can be widely used in drying board-shaped materials in fields of new-generation building materials, environmental protection, energy and etc. such as paper-coated gypsum-board, gypsum-board for decoration, rockwool sound-absorbing board, Eternite board and all kinds of fiber boards formed by means of extrusion or compaction process.
TLHZG series of large-scale continuously-conveying dryer mainly include board-feeding system, drying system, board-exiting system, driving system, tightening system, greasing system. The new drying technique of horizontal-longitudinal mixing airflow is adopted in the drying system, which can be well adapted to the different stage of drying process. This system is competitive both at home and abroad.
The heating source for TLHZG series of dryer varies from steam, natural gas to hot oil. This kind of dryer is especially advisable for combining with construction of steel plant because of the cheap heating source and raw materials, which can not only reduce the cost, but also be effective in respect of energy conservation and environment protection.
Working principle:
The board to dry is fed into the drying system and moved to the section of board-exiting by conveyer. This equipment is marked by combining the horizontal circulating airflow with the longitudinal airflow together, that is, the horizontal drying technique is employed in the front part of section (see diagram 1 ) to increase the drying strength and thermal efficiency while the longitudinal drying technique is employed in the rear part (see diagram 2) to remove the residual moisture. of about 15 percentage.
In the section of horizontal dehydration, the circulating airflow being distributed through a numerous holes is blown evenly onto the surface of the board. In this way, the drying strength can be increased three times compared with the longitudinal airflow drying technique. Each horizontal air room is separately circulated with several monitoring points. In the section of longitudinal dehydration, the circulating airflow is blown co-currently with the board. All air rooms share a temperature controlling point. This simple mechanism is convenient for maintenance and ideal for the mild drying process with slow fire at the stage of post-dehydration.
Waste heat utilization is taken into consideration in this equipment. The off-gas from the horizontal section can heat the fresh inlet air by the heat exchanger while the off-gas from the longitudinal section is vented at a relatively low temperature to improve the thermal utilization rate of the whole system.
Characteristics:
(1) The design takes it into consideration that the board needs to automatically produce so as to realize the automation control for improving productivity.
(2) This equipment can be controlled automatically either by SPA or by PLC.
(3) According to product requirements, the horizontal section can be divided into pre-heating room, heating room, drying room and temperature of each room can be separately monitored.
(4) The slowly-dried product is achieved from the longitudinal airflow section, where the residual moisture in the board can be finally removed and the final product will be taken into shape.
(5) This equipment is steady in operation. The technical parameters for the drying process are well chosen for board material with different thickness based on their molding process and speed. The board product quality can be ensured no matter how they vary in size or quantity during the process of production.
(6) Each air room in the horizontal section can be controlled with high thermal efficiency and energy conservation. One kilogram water will generate 660 kilocalorie. This equipment is compact and its total length is only 80% of the longitudinal dryer with the same capacity.
(7) The product is good in drying quality and the rate of final products is high.
(8) The equipment is well sealed and the connection between the components is also well sealed. The insulation is taken into consideration in structure design to reduce the thermal loss.
Process Flow Diagram:
Specification:
|
Type
|
|
Installed power(kw)
|
Thermal consumption(kcal/kg H2O)
|
Speed (m/min)
|
Maximum evaporating rate (kgH2O/h)
|
Total weight of equipment
(T)
|
Size
(length*width*height)
|
|
TLHZG10
|
10 million
|
635
|
660
|
1.25
|
6000
|
480
|
Cross: 55740x6340x5720 Vertical: 37700x3404x4152
|
|
TLHZG15
|
15 million
|
727
|
660
|
1.5
|
9000
|
540
|
Cross: 39080x6340x5120 Vertical: 27700x3404x3552
|
|
TLHZG20
|
20 million
|
875
|
660
|
1.7
|
12000
|
600
|
Cross: 43840x6340x5720 Vertical: 31700x3404x4152
|
|
TLHZG25
|
25 million
|
925
|
660
|
2.1
|
15000
|
680
|
Cross: 48600x6340x5720 Vertical: 33700x3404x4152
|
|
TLHZG30
|
30 million
|
1065
|
660
|
2.5
|
18000
|
740
|
Cross: 55740x6340x5720 Vertical: 37700x3404x4152
|
|
TLHZG50
|
50 million
|
1215
|
660
|
3.6
|
30000
|
860
|
Cross: 65740x6340x6320 Vertical: 43700x3404x4752
|