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» » Spray dryer heater

Spray dryer heater

 Spray dryer heater 

 

 

 

Gas heater

The heat generator is a recuperative heat exchanger with a blow gas burner and a heating fan. Heat from natural gas combustion products is transferred to the air through the surface of the heat exchanger. Smoke gases that heat the air move forcedly under the supercharging created by the fan burner and fed by the fan.

 

The heat generator is a counter-air heater that provides the heating of air flow to a temperature of 200 ± 10 ° С, which is used as a technological coolant in the production processes of food and other industries, including in drying spraying installations of dairy processing enterprises.

Use in the construction of a heat generator separate combinations of combustion products (natural gas) and heated air at a high efficiency (92%) allows the use of a heat generator in technological processes with high requirements for the purity of heated air.


Technical parameters of the Heat Generator ( ±10%)

 

Name

TG-0,95-200

Power, kW

350-1200

Air heating, °С

0 до 200

Volume of heated air, m3 ± 10%

24000

Nominal heat capacity of burner, mW (-10%; -5%)

0,95

Fuel type

natural gas

GOST (state standart) 5542-87

Maximum fuel consumption, m^3/h

114

Nominal temperature of exhaust gases, °С

155

Efficiency %

91-92

Weight, kg

3100

Aerodynamic drag, Pa

2000

Overall dimensions, mm, not more than:

length
width
height


3300
1500
2500

Pressure fan

МХЕ025-031515

 

The heat generator is made of stainless heat-resistant steel. It consists of a firebox, a rotary chamber, two heat exchangers, an air distribution system. The heat generator kit includes:

- heat generator;
- burner;
- the system of automation of the burner and heat generator;

  The design uses a Draizier burner, Germany, with an autonomous temperature controller, control cabinet and automatic heat generator, capable of operating on liquid and / or gas fuels.

Smoke pipe h = 8 m.

 

Principle of work and application.

The heat generator is used in milk-drying installations of spray type for heating the coolant - air fed into a drying tower. It is installed strictly in a separate room with an area of 57 sq.m. There is also installed a filter for inlet air and a pressure fan MXE 025-031515, manufactured in Germany.

Cold air supplied by a pressure fan in the heating part of the heat generator itself - the back wall of the furnace, passing through the inter-pipe space, is heated and, by blowing the furnace, is fed into the drying tower. Smoke gases cooled in the rotary chamber fall into the tube bundles in turbulent mode and exit through the chimney.

The automation of the heat generator and the burner provides support at a given level of the air temperature at the outlet, the gas-air ratio, as well as the protection of the heat generator and the termination of the gas supply in the event of power failure, protection circuit faults, failure of the density of the valves of the combined gas unit, and also in the event of reaching the limit values one of the parameters.

The air supplied to the heat generator is cleaned with filters, with the primary coarse purification carried out on filters of panel or pocket type with a filtration efficiency of 40-45% purification of atmospheric dust, type G4, mounted in a stainless steel frame, further air is purged on filters with efficiency filtration to 85-90% of type F7.

Advantages of using a heat generator installation:

• Increased productivity of the drying plant due to the increasing of drying air temperature.

• Save 25-30% of energy for drying 1 kg of finished product (efficiency of steam calorifer 70-80%, efficiency of heat generator - 91-92%).

• Reduction in fuel consumption (less than 250 m^3 of conventional fuel per 1 kg of finished product).

• The drying agent has always a stable temperature, which ensures high quality of the finished product.

When using a heat generator in the VRA-1, the performance of the drying plant doubles: from 100 kg. evaporated moisture up to 200 kg.

Demolition of the heat generator - 5%.

18-09-2017, 16:07 / Обладнання, Разпилювач сушильної установки

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