Gas retort mixed gas treatment system

Abstract

The utility model discloses a gas retort mixed gas treatment system, and relates to the technical field of waste gas recycling. The device comprises a venturi tower, the top of the venturi tower is provided with a plurality of hot ring water nozzles, the inlet end of the venturi tower is connected with a mixed gas outlet of the dry distillation furnace, the outlet end of the venturi tower is connected with a rotational flow plate tower, the outlet end of the rotational flow plate tower is connected with a cyclone oil trap, the cyclone oil trap is connected with an electrostatic oil trap, and the electrostatic oil trap is connected with an electrostatic dust collector. An outlet of the electrostatic oil trap is provided with three branches, the first branch is connected with a heat source inlet of the dry distillation furnace, the second branch is connected with a gas generator set, the third branch is connected with a diffusion torch, and mixed gas generated through treatment of the dry distillation furnace enters the venturi tower to be cooled. And the cooled mixed gas sequentially enters a rotational flow plate tower, a cyclone oil trap and an electrostatic oil trap to perform multi-stage cooling purification on the mixed gas, so that oil and water in the mixed gas can be effectively separated, and finally, relatively pure coal gas with a high calorific value can be obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to waste gas recycling technical field, especially relate to a dry distillation furnace mixed gas treatment system. BACKGROUND

[0002] Oil shale is handled in dry distillation furnace and can produce mixed gas, and the mixed gas can be used as effective energy after recovery and treatment, the existing mixed gas treatment mainly cools through the flushing of bridge pipe spray head and coal gas pipeline, but the mixed gas is not cooled completely after treatment, the oil and water content in the mixed gas is high, and the heat value is low when used as effective energy, and the mixed gas is difficult to burn. SUMMARY

[0003] In view of the above technical problems, the utility model provides a dry distillation furnace mixed gas treatment system for solving the problems of incomplete cooling, high oil and water content in the mixed gas, low heat value and difficult to burn when the mixed gas is recycled and utilized in the dry distillation furnace.

[0004] In order to achieve the above purpose, the technical scheme of the utility model is as follows:

[0005] A dry distillation furnace mixed gas treatment system, comprising a venturi tower, a plurality of hot ring water spray heads are arranged at the top of the venturi tower, the inlet end of the venturi tower is connected with the outlet of the mixed gas of the dry distillation furnace, the outlet end of the venturi tower is connected with a cyclone plate tower, the outlet end of the cyclone plate tower is connected with a cyclone oil catcher, the cyclone oil catcher is connected with an electrostatic oil catcher, three branches are arranged at the outlet of the electrostatic oil catcher, the first branch is connected with the heat source inlet of the dry distillation furnace, the second branch is connected with a gas generator set, and the third branch is connected with a diffuser torch.

[0006] Compared with the prior art, the utility model has the advantages that the mixed gas generated by the dry distillation furnace enters the venturi tower, the plurality of hot ring water spray heads at the top of the venturi tower start to spray, the mixed gas is accelerated and dispersed by the water mist and the change of the venturi tower pipe diameter pressure difference, so that the water mist and the mixed gas are fully contacted and cooled, the cooled mixed gas enters the cyclone plate tower, the cyclone oil catcher and the electrostatic oil catcher in turn, the mixed gas is multi-stage cooled and purified, the oil and water in the mixed gas can be effectively separated, and the coal gas with high heat value and high purity can be obtained. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is the structural schematic diagram of the utility model;

[0008] In the drawing:

[0009] 1, dry distillation furnace; 2, venturi tower; 3, cyclone plate tower; 4, cyclone oil catcher; 5, electrostatic oil catcher; 6, first branch; 7, second branch; 8, gas generator set; 9, flare; 10, third branch. DETAILED DESCRIPTION

[0010] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the utility model is further described in detail below in combination with specific embodiments and with reference to the drawings. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0011] A dry distillation furnace mixed gas treatment system, comprising a venturi tower 2, the venturi tower 2 is provided with a plurality of hot ring water nozzles at the top, the inlet end of the venturi tower 2 is connected with the mixed gas outlet of the dry distillation furnace 1, the outlet end of the venturi tower 2 is connected with a cyclone plate tower 3, the outlet end of the cyclone plate tower 3 is connected with a cyclone oil catcher 4, the cyclone oil catcher 4 is connected with an electrostatic oil catcher 5, the outlet of the electrostatic oil catcher 5 is provided with three branches, the first branch 6 is connected with the heat source inlet of the dry distillation furnace 1, the second branch 7 is connected with a gas generator set 8, and the third branch 10 is connected with a flare 9.

[0012] In use:

[0013] The mixed gas treated by the dry distillation furnace 1 enters into the venturi tower 2, and a plurality of hot ring water spray nozzles at the top of the venturi tower 2 start to spray, the mixed gas is accelerated and dispersed by the sprayed water mist and the change of the diameter pressure difference of the venturi tower 2, so that the water mist and the mixed gas are fully contacted and cooled thoroughly, the mixed gas after the preliminary cooling enters into the cyclone plate tower 3, under the guidance of the blades of the cyclone plate tower 3, the mixed gas rotates upward from the bottom of the cyclone plate tower 3, contacts with the liquid flowing downward in the cyclone plate tower 3, the contact area between the gas and the liquid is sharply increased, the liquid drops are rotated by the gas flow, the centrifugal force generated strengthens the contact between the gas and the liquid, and finally the liquid drops are thrown to the wall of the cyclone plate tower 3 and flow downward along the wall, pass through the overflow device to the next tower plate, are atomized by the gas flow again to contact with the gas. Through the continuous repetition of the gas-liquid phase movement process, the cyclone plate tower 3 can effectively remove the particulate matters and harmful substances in the gas; when the mixed gas containing oil passes through the electrostatic oil collector 5, the electric field generated by the high-voltage electrode can make the oil mist particles carry electric charges. The charged oil mist particles are adsorbed to the collection plate under the action of the electric field force, so that the purpose of purifying the gas is further achieved; the cyclone oil collector 4 is additionally arranged on the three-stage purification system, the cyclone oil collector 4 is installed between the cyclone plate tower 3 and the electrostatic oil collector, which increases the time for the separation of the gas and liquid phases; and the small liquid drops (oil-water mixed liquid drops) in the gas phase are thrown to the wall by the centrifugal force of the inlet high-speed gas flow, the liquid drops are separated from the turning gas after colliding with the wall due to the loss of kinetic energy, the oil-water liquid drops flow to the water seal tank and then flow into the circulating water pool, so that the oil collection is improved; and the working pressure of the electrostatic oil collector is reduced, so that the electrostatic oil collector can effectively collect oil.

[0014] After the mixed gas is cooled and purified by the cyclone plate tower 3, the cyclone oil collector 4 and the electrostatic oil collector 5, the mixed gas is divided into three branches, the first branch is used as the heat source of the dry distillation furnace 1, the second branch is used as the energy source and is sent to the gas generator set 8 for power generation, and the remaining part is discharged as the system exhaust, so that the heat value state of the coal gas can be observed by the combustion state, and the system pressure can be controlled as a whole.

[0015] The above merely describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A retort furnace mixed gas processing system, characterized by: The invention comprises a venturi tube tower (2), wherein a plurality of hot water ring nozzles are provided on the top of the venturi tube tower (2), an inlet end of the venturi tube tower (2) is connected to a mixed gas outlet of a retort (1), an outlet end of the venturi tube tower (2) is connected to a swirl plate tower (3), an outlet end of the swirl plate tower (3) is connected to a cyclone oil catcher (4), the cyclone oil catcher (4) is connected to an electrostatic oil catcher (5), and an outlet of the electrostatic oil catcher (5) is provided with three branches, a first branch (6) is connected to a heat source inlet of the retort (1), a second branch (7) is connected to a gas generator set (8), and a third branch (10) is connected to a flare torch (9).

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