CN208059518U - A kind of heat blower for spray drying - Google Patents

Abstract

The utility model provides a kind of heat blower for spray drying.Including bending heat conducting pipe (1), circulation loop heat conducting pipe (2), helical fin (3), straight rib fin (4), case top (5), babinet (6) and smoke outlet (7)；It is characterized in that, the utility model on case top (5) by being arranged phase-change heat transfer element, by in heat blower, the heat of low-temperature region obtain abundant conversion, so that the service efficiency, operational efficiency and thermal energy conversion efficiency of heat blower is further promoted, plays a significant role to reducing the discharge of equipment waste heat, raising equipment efficiency of usage, reducing spray drying cost.

Description

A kind of heat blower for spray drying

Technical field

The utility model is related to thermal conduction study field more particularly to a kind of heat blowers for spray drying.

Background technology

Spray drying is a kind of material flow regime, sprays and nebulizes in drying tower through sprayer, makes it and does Dry medium comes into full contact with, and convection drying is the technique of dry material.Since droplet is very thin, there is huge evaporation surface, institute Drying can be completed with moment.The difficult point of spray drying is that how to generate high-temperature medium.It can be carried to spray drying tower It is a difficult point and the key in current spray drying technology for cheap pollution-free high temperature drying medium.

The common method for generating hot-air mainly has electrical heating, steam heating and using fuel oil, combustion gas, coal-fired production at present Raw high-temperature flue gas using conventional tubular heat exchanger or carries out indirect heat exchange using heat exchange of heat pipe and obtains hot-air etc..It is above several Kind generates in the method for dried medium, and electrical heating method power consumption is big, and production cost is high, from the aspect of practicability and economy It is less suitable；The saturated vapour pressure of boiler is restricted when steam heating generates high-temperature flue gas, is not achieved needed for drying process Temperature influences the yield of equipment and the quality of product, and boiler is complicated, and cost of investment is higher, and management is inconvenient, from skill There are bigger difficulty in art and management；The method that high-temperature hot air is obtained using the method for fire coal, fuel oil, combustion gas, frequently with Conventional tubular heat exchanger carries out indirect heat exchange, and the heat exchange medium of this mode is gas-gas, and the coefficient of heat transfer of gas is smaller, This results in equipment metal consumption big, and equipment volume is huge, and heat loss is big, and security reliability is low, and due to tubulation usually by The reason of oxidation, abrasion, overheat and dew point corrosion, it is easy to cause tubulation partial penetration, thermal (temperature difference) stress also usually makes tube sheet and pipe The junction of son is destroyed, and is penetrated through so as to cause flue gas and air, and product quality is made to generate serious adverse consequences；With high temperature High temperature heat pipe heat exchanger of the heat pipe as heat transfer element, water and the equal discomfort of organic working medium are fit to do heat-pipe working medium, under the high temperature conditions, The saturated vapour pressure of water is too high, and gasification latent heat is reduced as temperature increases, and is more than certain temperature extremes organic working medium Cracking and carbonization will occur, the resistance increase that exchanges heat under the high temperature conditions can cause Strength of Metallic Materials is suddenly poly- to decline, the peace of heat pipe Full operation can not ensure.High-temperature heat pipe is using liquid metal as working media, using stainless steel or other heat resisting steel as shell, tool There are good thermal stability and lower saturated vapor pressure, still, almost all of high-temperature heat pipe all has liquid-sucking core, even if There is the high-temperature heat pipe to work under conditions of gravity booster action to be also in this way, high-temperature heat pipe manufacturing equipment, manufacture material and system Make technique require it is higher, formed heat transmission equipment cost it is higher, consumers' acceptable degree is poor, and there are certain difficulty for marketing.

Patent ZL.2015 2 1134371.5 is disclosed " a kind of high-efficient hot air furnace for baking equipment for preparatory treatment of tobacco ", is used Non- phase transformation circulation loop heat exchange element solves the heat exchange problem of high-temperature flue gas and air under high heat flux density working condition, High-temperature hot-air medium can be produced, is suitable for multi-field drying process with atomizing.But since mixed flue gas enters heat Air generator heat exchange after emission path it is shorter, in heat blower top, low temperature exhaust heat could not obtain abundant conversion It is discharged outward into chimney, although furnace roof surface is provided with mental-finned, the heat exchange area of fin is small, and fin is by gold in addition Belong to thermal conductive property limitation, thermal resistance is larger, in heat blower, the heat of low-temperature region cannot timely and effective conversion, make It is lost in vain at amount of heat.

Invention content

In order to solve the above-mentioned technical problem, the utility model provides a kind of heat blower for spray drying.Including Bending heat conducting pipe (1), circulation loop heat conducting pipe (2), helical fin (3), straight rib fin (4), case top (5), babinet (6) and Smoke outlet (7)；The utility model can make in heat blower, the heat of low-temperature region obtains abundant conversion, make hot wind Service efficiency, operational efficiency and the thermal energy conversion efficiency of generator are further promoted, and are conducted heat with non-phase transformation circulation loop first Part forms resultant force, and clean drying medium is provided for drying process with atomizing, to reducing the discharge of equipment waste heat, improving equipment utilization effect Rate, reduction spray drying cost play a significant role.

The utility model solve above-mentioned technical problem technical solution be：Including：Bending heat conducting pipe (1), circulation loop Heat conducting pipe (2), helical fin (3), straight rib fin (4), case top (5), babinet (6) and smoke outlet (7)；It is characterized in that, in case In the plate face for pushing up (5), around smoke outlet (7) distribution setting bending heat conducting pipe (1)；Bending heat conducting pipe (1) is curved shape Phase transformation gravity assisted heat pipe；The axis of bending heat conducting pipe (1) condensation segment is formed with certain angle with horizontal direction；Bending heat conduction The condensation segment of pipe (1) is provided with helical fin (3), and the evaporator section of bending heat conducting pipe (1) is light pipe.Tank wall in babinet (6) Upper setting circulation loop heat conducting pipe (2), circulation loop heat conducting pipe (2) are one group of non-phase transformation circulation loop heat conducting pipe, circulation loop Heat conducting pipe (2) is arranged in order distribution around the perimeter of babinet (6), and the short transverse along babinet (6) is vertically arranged, and circulation loop is led The curved bend tune at heat pipe (2) both ends passes through fixation on babinet (6), and two axis of circulation loop heat conducting pipe (2) are with babinet (6) it is that baffle arrangement is provided with straight rib fin (4), babinet on the pipeline section on the outside of the inside and outside both sides of babinet (6), babinet (6) (6) pipeline section on the inside of is light pipe.The ring flange (8) being connected and fixed with heat source is arranged in babinet (6) lower end.

The utility model has technical effect that：The utility model is arranged on heat blower case top around smoke outlet Cluster has the phase transformation gravity assisted heat pipe of high efficient heat exchanging performance, can by heat blower, the heat of low-temperature region filled Point conversion, makes the service efficiency, operational efficiency and thermal energy conversion efficiency of heat blower further be promoted, and non- Phase transformation circulation loop heat transfer element forms resultant force, and clean drying medium is provided for drying process with atomizing, to reducing equipment waste heat Discharge, raising equipment efficiency of usage, reduction spray drying cost play a significant role.

Description of the drawings

Fig. 1 is a kind of heat blower cross-sectional view for spray drying.

Fig. 2 is the bending heat conducting pipe structural schematic diagram on heat blower.

Fig. 3 is the circulation loop heat conducting pipe structural schematic diagram on heat blower.

Fig. 4 is the cross-sectional structure schematic diagram of heat blower.

Specific implementation mode

The utility model is described further below in conjunction with attached drawing.

As shown in Figure 1, the utility model includes bending heat conducting pipe (1), and circulation loop heat conducting pipe (2), helical fin (3), straight rib fin (4), case top (5), babinet (6) and smoke outlet (7)；In the plate face on case top (5), it is distributed around smoke outlet (7) It is provided with bending heat conducting pipe (1)；Circulation loop heat conducting pipe (2) is provided on the tank wall of babinet (6)；Babinet (6) lower end is also set It is equipped with the ring flange (8) being connected and fixed with heat source.

As shown in Fig. 2 or Fig. 1, bending heat conducting pipe (1) is the phase transformation gravity assisted heat pipe of curved shape；Bending heat conducting pipe (1) axis of condensation segment is formed with certain angle with horizontal direction；The condensation segment of bending heat conducting pipe (1) is provided with spiral wing The evaporator section of piece (3), bending heat conducting pipe (1) is slide wall light pipe.

As shown in Fig. 3 or Fig. 1, circulation loop heat conducting pipe (2) is provided in the plate face of babinet (6)；Circulation loop heat conducting pipe (2) it is the non-phase transformation circulation loop heat conducting pipe of cluster, circulation loop heat conducting pipe (2) is arranged in order distribution around the perimeter of babinet (6), Short transverse along babinet (6) is vertically arranged, and the curved bend tune at circulation loop heat conducting pipe (2) both ends passes through on babinet (6) Fixed, two axis of circulation loop heat conducting pipe (2) are baffle arrangement in the inside and outside both sides of babinet (6), babinet with babinet (6) (6) straight rib fin (4) is provided on the pipeline section on the outside of, the pipeline section on the inside of babinet (6) is light pipe.

As shown in figure 4, circulation loop heat conducting pipe (2) is non-phase transformation circulation loop heat conducting pipe, circulation loop heat conducting pipe (2) Straight rib fin (4) is provided on the pipeline section of side, the pipeline section of the other side is light pipe.

The technical principle of the utility model：When the utility model is used, by the flange of the utility model lower end and burning Device exhanst gas outlet is connected and fixed, and is placed in the lower section of heat supply indoor circulation wind turbine, when heat blower is run, what burner generated High-temperature flue gas enters heat blower from lower part, first flows through tube bank on the inside of non-phase transformation circulation loop heat conducting pipe, intraductal working medium by Molecular density diffusion generates power after heat, and working medium is taken heat and moved upwards, the high heat flux density heat of high-temperature area is quickly transmitted To straight rib fin and release heat；When in mixed flue gas entrance, low-temperature region, flow through phase transformation heat pipe when, in heat pipe chamber body The heated generation boiling of working medium is undergone phase transition, and working medium is converted into steam state by liquid and is moved upwards along heat pipe cavity, and heat is passed It passs helical fin and releases heat, the steam state working medium condensation in cavity is converted into liquid, and liquid refrigerant is returned by gravity It flow to evaporator section to continue to be heated, forms reciprocation cycle, realize the Rational flow and heat transfer process of heat-conducting work medium.

The heat of heat blower release is handed over by forced convertion mode with air under the action of circulating fan It changes, heated air is admitted to spray drying tower in a manner of circulating, and clean dried medium is provided for drying process with atomizing Dried material.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this The all any modification, equivalent and improvement done within the spirit and principle of utility model, should be included in the utility model Within protection domain.

Claims (3)

1. a kind of heat blower for spray drying, including：Bending heat conducting pipe, circulation loop heat conducting pipe, helical fin, Straight rib fin, case top, babinet and smoke outlet；It is characterized in that, in the plate face on the case top, it is provided with around smoke outlet distribution curved Curved heat conducting pipe；Bending heat conducting pipe is the phase transformation gravity assisted heat pipe of cluster curved shape；The axis of bending heat conducting pipe condensation segment It is formed with certain angle with horizontal direction；The condensation segment of bending heat conducting pipe is provided with helical fin, the steaming of bending heat conducting pipe Hair section is light pipe.

2. a kind of heat blower for spray drying according to claim 1, which is characterized in that the tank wall of the babinet On be provided with circulation loop heat conducting pipe；Circulation loop heat conducting pipe is the non-phase transformation circulation loop heat conducting pipe of cluster, circulation loop heat conduction Pipe is arranged in order distribution around the perimeter of babinet, and the short transverse along babinet is vertically arranged, the arc at circulation loop heat conducting pipe both ends Shape bending section passes through fixation on babinet, two axis of circulation loop heat conducting pipe using babinet as baffle arrangement in babinet, Outer both sides are provided with straight rib fin on the pipeline section on the outside of babinet, and the pipeline section of box inside is light pipe.

3. a kind of heat blower for spray drying according to claim 1, which is characterized in that the babinet lower end is also It is provided with the ring flange being connected and fixed with heat source.