High temperature drying of tobacco and coffee beans biomass heat transfer oil fired boiler

Ylw/yll/ygw biomass organic heat carrier furnace (hereinafter referred to as heating furnace) is a new type of heat supply equipment, which uses biomass as fuel and flue gas as heat source, heat transfer oil (such as l-qb, l-qc, L-QD) as heat carrier, forces the phase circulation of heat carrier fluid through circulating oil pump, transmits the heat to the heating equipment, and then returns to the high-temperature, low-pressure and energy-saving equipment reheated by the heating furnace. The heating temperature can be as high as 340 ℃, Generally, the working pressure is below 1.0MPa, because it works in liquid phase, it is safe and reliable

1. Product features

① High temperature and low pressure, high working temperature can be obtained under low operating pressure. The pressure bearing condition of thermal equipment can be greatly reduced and the equipment cost can be reduced.

② Reasonable structure, advanced technology, small floor area, small size, beautiful appearance, simple management, high thermal efficiency, with significant energy-saving effect and economic benefits. Compared with similar foreign products, the structure is unique. The furnace types are vertical and horizontal.

③ The heating surface is arranged reasonably, and the service life of the heat transfer oil is long. The flue gas emission meets the requirements of the national environmental protection standard gb13271-2001 emission standard of boiler air pollution.

④ The temperature regulation is accurate and reliable. It is equipped with complete operation control and safety monitoring devices, with a high degree of automation and low labor intensity.

⑤ Energy saving and consumption reduction: compared with steam heating, it can save energy by 1 to 1.5 times, and 0.8 to 1.3 times compared with electric heating, significantly saving operating costs.

(2) boiler parameters and auxiliary equipment specifications

Organic heat carrier furnace has the characteristics of high heating temperature, low working pressure and energy saving, and can be widely used in a variety of industrial heating processes. Replace electricity, steam and other heating to improve productivity. System design overview:

The heating furnace is composed of combustion system, heating system and electrical control system. The company provides customers with complete sets of main and auxiliary machines of heating furnaces and relevant technical documents. (1) . combustion system:

① Coal fired boilers include: combustion chamber, blower, induced draft fan, dust collector, air preheater (energy-saving water heater), coal feeder, slag extractor and chimney.

② Oil (gas) boilers include oil (gas) storage tanks, burners, combustion chambers, air preheaters (energy-saving water heaters), chimneys, etc.

③ Flue gas waste heat boiler includes: furnace body and chimney.

(2) The heating system includes: furnace body, oil storage tank, expansion tank, circulating pump (one of the two is for standby), oil injection pump, filter, oil-gas separator, etc.

(3) Electrical system includes: electrical controller and its detection instrument.

(4) Technical documents: installation and operation instructions, strength calculation summary sheet, product quality certificate, general drawing, body drawing, monitoring instrument installation drawing, heat supply process flow diagram of organic heat carrier furnace, and foundation diagram of organic heat carrier furnace. (1) Heating equipment

The required temperature of the heated material in the heating equipment determines the working temperature of the heat transfer oil. The temperature of the heat transfer oil is higher than that of the heated material. The larger the temperature difference is, the smaller the heating area is required. A large temperature difference will inevitably lead to a higher temperature of the heat transfer oil. However, some chemical materials are prone to cracking and coking at high temperatures. Therefore, the size of the temperature difference should be determined according to specific conditions to avoid exceeding the maximum operating temperature of the heat transfer oil, Or damage the heated material.

(2) Organic heat carrier furnace is the key equipment of heating system. The organic heat carrier furnace generally adopts the tubular furnace. In order to avoid over temperature coking, the flow rate of heat transfer oil in the furnace tube should not be too low, but too high flow rate will increase the flow resistance and consume more circulating pump head and power.

The exhaust gas temperature of organic heat carrier furnace is relatively high, generally 300-400 ℃. Auxiliary heating surfaces such as air preheater or energy-saving water heater shall be added at the tail to reduce the exhaust temperature, so as to improve thermal efficiency and save energy consumption