A Mercury Catalyst Exchange Type Hot Air Drying Furnace

Abstract

The invention provides a mercury catalyst exchange type hot air drying furnace. The mercury catalyst exchange type hot air drying furnace comprises a drying furnace body A, a drying furnace body B, a supporting frame, an air inlet air heater and a tail gas air heater. The drying furnace body A and the drying furnace body B are fixedly installed on the supporting frame. Feed ports are formed in the upper end of the drying furnace body A and the upper end of the drying furnace body B correspondingly. Discharge ports are formed in the lower end of the drying furnace body A and the lower end of the drying furnace body B correspondingly. The tail gas air heater is connected with a gas outlet A in the upper end of the drying furnace body A and a gas outlet B in the upper end of the drying furnace body B. A circulation pipeline is further arranged on the tail gas air heater and is connected to the lower end of the drying furnace body A and the lower end of the drying furnace body B. According to the mercury catalyst exchange type hot air drying furnace, exchange of the drying furnace and pre-dried furnace pieces is achieved through valve control, continuous production of the drying furnace is achieved, the drying time is shortened, and the production cost is reduced; by making tail gas enter the corresponding air heater to be heated again and cyclically utilized, the energy consumption of air heating is lowered, the discharge amount is decreased, and the environment pollution is also reduced; and by forming the discharge ports in the bottoms of the drying furnace bodies, the survival cost generated during discharge is reduced.

Description

technical field [0001] The invention relates to the field of mercury catalyst production and drying, in particular to a mercury catalyst exchange type hot air drying furnace. Background technique [0002] Hot air drying furnace is a drying furnace widely used in the field of mercury catalyst drying, and its main function is to heat and dry raw materials. The excellent drying performance directly affects the quality of the product, and the drying efficiency directly affects the production efficiency. At present, the drying method of the hot air drying furnace used is: add the mercury catalyst to be dried from the top of the drying furnace, use the hot air blower to heat the air to the specified temperature, blow it in from the bottom of the drying furnace, and exhaust the tail gas directly from the top to the gas purification treatment In the process section, after the drying is completed, the drying furnace is vacuumed so that the raw materials are drawn out from the top. ...

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Problems solved by technology

[0003] In the above process, the heat contained in the tail gas is relatively high, and the temperature of the tail gas is generally between 75-85 ° C. Direct discharge causes energy waste. Secondly, raw materials are drawn from the top, which consumes a lot of energy and increases production costs. In the process, a large amount of activated carbon collides to produce a large amount of powder, which is not conducive to production operations

[0004] When solving the above problems, the publication number is CN104197692, a mercury catalyst production tail gas recycling drying system and its drying method, which discloses the tail gas recycling drying system and its drying method. Although the patent recycles the tail gas, this process Dry continuous operation cannot be achieved

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