CN110947254A - Heating system of bag type dust collector of waste incineration power plant - Google Patents

Abstract

The utility model provides a waste incineration power plant bag collector heating system, includes sack cleaner, induced air system and main heating circulation system, and the induced air system includes air-supply line, draught fan, exhaust pipe, muffler and induced air system in proper order with the air current direction and connects the chimney pipe, and main heating circulation system includes air-supply line interface, air heater aspiration channel, air-supply line valve, air heater exhaust pipe in proper order with the air current direction. And a shared hot smoke system is also arranged and comprises a shared communicating pipe, the inlet of the shared communicating pipe is connected with the exhaust pipe of each induced air system through each eduction pipe, and the outlet of the shared communicating pipe is connected with the suction pipe interface of the hot air self-circulation system of each bag type dust collector through each shunt pipe. When the main heater of the bag-type dust collector frequently breaks down, the hot smoke of other running induced air systems can be used for heating the bag-type dust collector with the fault through the shared hot smoke system, so that the bag-type dust collector with the fault can normally run.

Description

Heating system of bag type dust collector of waste incineration power plant

Technical Field

The invention relates to a flue gas waste heat recycling system, in particular to a heating system of a bag type dust collector of a waste incineration power plant.

Background

A flue gas purification treatment system of a waste incineration plant is provided with a semi-dry reaction tower, an atomizer, a bag-type dust remover, active carbon, lime slurry and other systems. Wherein the sack cleaner is one of the waste incineration power plant flue gas processing system key equipment, and the sack cleaner function has two aspects: firstly, separating dust and solid particles in the flue gas at an inlet, and then discharging dust-free clean gas at an outlet; secondly, the dust adhered to the filter bag contains lime slurry and activated carbon, so that the neutralization reaction can be continued and harmful substances in the dust can be adsorbed.

The preheating circulation of the bag-type dust collector is an important part of the bag-type dust collector, a main heater of the bag-type dust collector preheats a centering box body before cold start in design, so that the temperature in a cabin is preheated to more than 140 ℃ from the ambient temperature within 8 hours, a smoke inlet door and a smoke outlet door are in a closed state before a hot air circulation system of the bag-type dust collector is started, and the box body of the bag-type dust collector is in a closed hot air self-circulation state. The best effect can be achieved only by meeting the condition that the filter bag in the bag-type dust collector removes the dust of the smoke, and meanwhile, the damage to the bag-type dust collector in the injection process after the hot smoke meets with the cold air in the dust collector and is subjected to condensation is prevented. However, in actual operation, the main heater of the bag-type dust collector is found to be frequently broken down, so that the temperature of the chamber cannot meet the requirement.

Disclosure of Invention

In order to overcome the problems in the prior art, the invention provides a heating system of bag-type dust collectors of a waste incineration power plant, which is characterized in that a shared hot smoke system is arranged and comprises a shared communicating pipe, the inlet of the shared communicating pipe is connected with the exhaust pipes of all air induction systems through all eduction pipes, and the outlet of the shared communicating pipe is connected with the suction pipe interfaces of the hot air self-circulation systems of all bag-type dust collectors through all shunt pipes. When the main heater of the bag-type dust collector frequently breaks down, so that the temperature of the bin cannot meet the requirement, the bag-type dust collector with the fault can be heated by sharing the hot smoke system and utilizing the hot smoke of other running induced air systems, and the bag-type dust collector with the fault can be ensured to normally run.

The technical scheme includes that the bag type dust collector heating system of the waste incineration power plant comprises a bag type dust collector, an air inducing system and a main heating circulating system, wherein the air inducing system sequentially comprises an air inlet pipe, an induced draft fan, an exhaust pipe, a silencer and an air inducing system in an air flow direction, the air inlet pipe is connected with the bag type dust collector, and the air inducing system is connected with a chimney pipe to discharge smoke to a chimney; the main heating circulation system comprises an air suction pipe interface, an air heater air suction pipe, an air suction pipe valve, an air heater and an air heater exhaust pipe in sequence along the air flow direction, wherein the air heating system air suction pipe is connected with an interface of the bag type dust collector and sucks air from the interface, the air heater exhaust pipe is connected with another interface of the bag type dust collector and provides hot air to the air heater, and the air heater continuously provides hot air to the bag type dust collector in a circulating manner.

The invention has the beneficial effects that: the utility model provides a msw incineration power plant bag collector heating system, is through setting up the hot cigarette system of sharing, and the hot cigarette system of sharing is including sharing communicating pipe, the entry of sharing communicating pipe is connected with the exhaust pipe of each induced air system through each stand-off pipe, the export of sharing communicating pipe is through the inlet scoop interface connection of each shunt tubes and each bag collector's hot-blast self-circulation system. When the main heater of the bag-type dust collector frequently breaks down, so that the temperature of the bin cannot meet the requirement, the bag-type dust collector with the fault can be heated by sharing the hot smoke system and utilizing the hot smoke of other running induced air systems, and the bag-type dust collector with the fault can be ensured to normally run.

Drawings

Fig. 1-3 are schematic diagrams of system arrangements according to one embodiment of the prior art. Fig. 1 is a front view, fig. 2 is a plan view, and fig. 3 is an enlarged view of a part of the structure.

Fig. 4 and 6 are schematic diagrams of the system layout of the first embodiment of the present invention. Fig. 4 is a front view, fig. 5 is a plan view, and fig. 6 is a partially enlarged schematic view of the structure.

In the figure:

bag-type dust collectors 1A and 1, bag-type dust collectors 1B and 2,

2A, 1 # induced draft system; 2B, 2 # induced draft system;

2A1, No. 1 induced draft fan; 2B1 and No. 2 induced draft fan;

2A21, No. 1 air inlet pipe, 3A22 and No. 1 exhaust pipe; 2B21, No. 2 air inlet pipe, 3B22 and No. 2 exhaust pipe;

2a3, No. 1 muffler; 2B3, No. 2 muffler;

the 2A4 No. 1 induced draft system is connected with a chimney; 2B4, 2 # induced draft system connects chimney;

3A, No. 1 main heating circulation system; no. 3B and No. 2 main heating circulation systems,

3a1, No. 1 air heater; 3B1, No. 2 air heater;

3A21, No. 1 air suction pipe of air heater, 3A22, No. 1 air exhaust pipe of air heater; no. 3B21 air suction pipe of air heater No. 2, No. 3B22 air exhaust pipe of air heater No. 2;

3a3, No. 1 draft tube valve; 3B3, No. 2 draft tube valve;

3A4, No. 1 suction tube interface; 3B4, No. 2 suction tube interface;

4. a shared hot smoke system; 4.1 sharing the communicating pipe;

4A1, No. 1 eduction tube; 4B1, No. 2 eduction tube;

4A2, No. 1 outlet pipe valve; 4B2, No. 2 outlet pipe valve;

4a3, shunt No. 1; 4B3, No. 2 shunt tube.

Detailed Description

Fig. 1-3 are schematic diagrams of system arrangements according to one embodiment of the prior art. Fig. 1 is a front view, fig. 2 is a plan view, and fig. 3 is an enlarged view of a part of the structure. In the prior art, the heating system of the bag-type dust collector of the waste incineration power plant comprises a bag-type dust collector 1A and a bag-type dust collector 2B of a waste incineration power plant, an air induction system 2A and 2B of the waste incineration power plant, a main heating circulation system 3A of the waste incineration power plant and a main heating circulation system 3B of the waste incineration power plant.

The drawing shows that No. 1 induced air system 2A includes No. 1 air-supply line 2A21, No. 1 draught fan 2A1, No. 1 exhaust pipe 2A22, No. 1 muffler 2A3 and No. 1 induced air system in proper order with the air current direction and connects chimney 2A4, air-supply line 2A21 is connected with bag dust remover, induced air system connects chimney 2A4 and arranges the flue gas to the chimney. No. 1 main heating cycle system 3A includes No. 1 aspiration channel interface 3A4, No. 1 air heater aspiration channel 3A21, No. 1 aspiration channel valve 3A3, No. 1 air heater 3A1, No. 1 air heater exhaust pipe 3A22 in proper order with the air current direction, No. 1 air heating system aspiration channel 3A21 with an interface connection of No. 1 bag collector inhales from it, No. 1 air heater exhaust pipe 3A22 with another interface connection of No. 1 bag collector provides hot-blast to it, warp No. 1 air heater 3A1 constantly to No. 1 bag collector circulation provides hot-blast.

The drawing shows that No. 2 induced draft system 2B includes No. 2 air-supply line 2B21, No. 2 draught fan 2B1, No. 2 exhaust pipe 2B22, No. 2 muffler 2B3 and No. 2 induced draft system in proper order with the air current direction and connects chimney 2B4, air-supply line 2B21 is connected with bag dust remover, induced draft system connects chimney 2B4 and arranges the flue gas to the chimney. No. 2 main heating cycle system 3B includes No. 2 aspiration channel interface 3B4, No. 2 air heater aspiration channel 3B21, No. 2 aspiration channel valves 3B3, No. 2 air heater 3B1, No. 2 air heater exhaust pipe 3B22 in proper order with the air current direction, No. 2 air heating system aspiration channel 3B21 with an interface connection of No. 2 bag collector inhales from it, No. 2 air heater exhaust pipe 3B22 with No. 2 another interface connection of bag collector provides the hot-blast to it, warp No. 2 air heater 3B1 constantly to No. 2 bag collector circulation provides the hot-blast.

The primary heater systems of the individual baghouses of the waste incineration system are shown to be operated independently.

In the actual operation process, before the hot air circulating system of the bag type dust collector is started, the smoke inlet door and the smoke outlet door are in a closed state, and the box body of the bag type dust collector is in a closed hot air self-circulating state. The best effect can be achieved only by meeting the condition that the filter bag in the bag-type dust collector removes dust from smoke, and meanwhile, the bag-type dust collector is prevented from being damaged in the injection process after hot smoke meets with cold air in the dust collector and is subjected to condensation. However, in actual operation, the main heater of the bag-type dust collector is found to be frequently in fault, so that the temperature of the bin cannot meet the requirement. The present invention suggests that in this example, only two bag house collectors and their related systems are shown, whereas in actual operation, the number of bag house collectors and their related systems of the waste incineration system exceeds two.

Fig. 4-6 are schematic system layouts according to a first embodiment of the present invention. Fig. 4 is a front view, fig. 5 is a plan view, and fig. 6 is a partially enlarged schematic view of the structure. The figure shows that, different from the prior art, in this example, a bag collector heating system of a waste incineration power plant is further provided with a shared hot smoke system 4, the shared hot smoke system 4 includes a shared communicating pipe 4.1, an inlet of the shared communicating pipe 4.1 is connected with an exhaust pipe 2A22 of a No. 1 induced draft system 2A and an exhaust pipe 2B22 of a No. 2 induced draft system 2B through a No. 1 eduction pipe 4a1 and a No. 2 eduction pipe 4B1, respectively, and an outlet of the shared communicating pipe 4.1 is connected with a No. 1 suction pipe interface 3a4 and a No. 2 suction pipe interface 3B4 through a No. 1 shunt pipe 4A3 and a No. 4B3, respectively.

In the present embodiment, when the main heater of a certain bag-type dust collector frequently fails and the temperature of the bin cannot meet the requirement, the hot smoke of other air inducing systems in operation can be used to heat the bag-type dust collector with the failure through the shared hot smoke system, so as to ensure that the bag-type dust collector with the failure can normally operate.

Claims (1)

1. A bag type dust collector heating system of a waste incineration power plant comprises a bag type dust collector, an air inducing system and a main heating circulating system, wherein the air inducing system sequentially comprises an air inlet pipe, an induced draft fan, an exhaust pipe, a silencer and an air inducing system in the airflow direction and is connected with a chimney pipe; the main heating circulation system comprises an air suction pipe interface, an air heater air suction pipe, an air suction pipe valve, an air heater and an air heater exhaust pipe in sequence along the air flow direction, wherein the air heating system air suction pipe is connected with an interface of the bag type dust collector and sucks air from the interface, the air heater exhaust pipe is connected with another interface of the bag type dust collector and provides hot air to the air heater, and the air heater continuously provides hot air to the bag type dust collector in a circulating manner.

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