Oily sludge pyrolysis treatment device

Abstract

The utility model discloses an oily sludge pyrolysis treatment device which comprises a reactor, a burner structure arranged below the reactor, a spiral feeding structure arranged beside the reactor, a discharge end of the spiral feeding structure communicated with the reactor, a heat exchange chamber arranged on the outer side of a shell of the spiral feeding structure, the upper end of the reactor connected with the heat exchange chamber through a pipeline, and the lower end of the reactor connected with the heat exchange chamber through a pipeline. The heat exchange chamber is connected to the spray tower through a second pipeline, the spray tower is connected to the post-treatment structure, the second pipeline is provided with a first cooling heat exchange structure, the first cooling heat exchange structure is connected to the desulfurization slurry preparation box, the desulfurization slurry preparation box is connected to the liquid storage box, and the liquid storage box is connected to a spray pipe in the desulfurization tower. According to the utility model, the pyrolysis oil gas formed by the pyrolysis reaction exchanges heat with the pre-positioned oily sludge, on one hand, the oily sludge is preheated, the pyrolysis efficiency is improved, and on the other hand, the pyrolysis oil gas is cooled, so that the subsequent spraying treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil-containing sludge treatment technical field, concretely relates to an oil-containing sludge pyrolysis treatment device. BACKGROUND

[0002] Oil-containing sludge refers to the sludge mixed with crude oil, various product oils, residual oil and other petroleum hydrocarbons, and belongs to hazardous waste; at present, the oil-containing sludge treatment methods include mechanical concentration method, incineration method, natural sedimentation method, thermal desorption method and the like, among which, the currently widely used method is thermal desorption method, which includes heating and pyrolyzing the oil-containing sludge to produce pyrolysis oil gas, and then performing harmless treatment on the pyrolysis oil gas; however, in the above method, the pyrolysis oil gas is generally directly sprayed into a spraying structure for cold water spraying to realize the treatment of condensable gas, and when the direct high-temperature pyrolysis oil gas is in contact with cold water for heat exchange, a large amount of cold water or a long heat exchange contact time is required, and there is a problem of low treatment efficiency. SUMMARY

[0003] The utility model aims at the deficiency in the above background art, and provides an oil-containing sludge pyrolysis treatment device which can guarantee treatment effect and improve treatment efficiency.

[0004] To achieve the above-mentioned purpose, the utility model discloses an oil-containing sludge pyrolysis treatment device which adopts the following technical scheme:

[0005] An oil-containing sludge pyrolysis treatment device includes a reactor, a burner structure is arranged below the reactor, a spiral feeding structure is arranged beside the reactor, the discharge section of the spiral feeding structure is communicated with the reactor, a heat exchange chamber is arranged outside the shell of the spiral feeding structure, the upper end of the reactor is connected to the heat exchange chamber through a pipeline, the heat exchange chamber is connected to a spraying tower through a second pipeline, the spraying tower is connected to a post-treatment structure, the post-treatment structure is connected to the burner structure through a third pipeline, a first cooling and heat exchange structure is arranged on the second pipeline, the first cooling and heat exchange structure is connected to a desulfurization slurry preparation tank, the desulfurization slurry preparation tank is connected to a liquid storage tank, the liquid storage tank is connected to a spraying pipe in a desulfurization tower, and the burner structure is connected to the desulfurization tower.

[0006] Further improvement of the utility model discloses an oil-containing sludge pyrolysis treatment device lies in that a second heat exchange chamber is arranged outside the shell of the spiral feeding structure, the burner structure is connected to the second heat exchange chamber, the second heat exchange chamber is connected to the desulfurization tower through a fourth pipeline, a second cooling and heat exchange structure is arranged on the fourth pipeline, and a cold water outlet on the second cooling and heat exchange structure is connected to the desulfurization slurry preparation tank.

[0007] Further improvement of the utility model discloses an oil-containing sludge pyrolysis treatment device lies in that a heating structure is further arranged outside the spiral feeding structure.

[0008] A further improvement of the pyrolysis treatment device for oily sludge of this utility model is that the post-treatment structure includes a wet deacidification structure, a dry deacidification structure, and a bag filter dust collection structure.

[0009] Compared with the prior art, the beneficial effects of this utility model are:

[0010] This invention exchanges heat between the pyrolysis oil and gas formed by the pyrolysis reaction and the oily sludge in the pre-treatment stage. On the one hand, it preheats the oily sludge and improves the pyrolysis efficiency. On the other hand, the pyrolysis oil and gas cools down, which also helps to improve the efficiency of subsequent spray treatment. The water after heat exchange is used to prepare desulfurization slurry, which also improves the desulfurization effect of the burner flue gas. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] In the diagram: 1 Reactor, 2 Burner structure, 3 Screw feeding structure, 4 First heat exchange chamber, 5 Second pipeline, 6 Spray tower, 7 Post-treatment structure, 8 Third pipeline, 9 First cooling heat exchange structure, 10 Desulfurization slurry preparation tank, 11 Storage tank, 12 Desulfurization tower, 13 Second heat exchange chamber, 14 Fourth pipeline, 15 Second cooling heat exchange structure, 16 Heating structure. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] like Figure 1 As shown, an oily sludge pyrolysis treatment device includes a reactor 1, a burner structure 2 located below the reactor, and a screw feeding structure 3 located beside the reactor. The discharge end of the screw feeding structure is connected to the reactor. A heat exchange chamber 4 is located on the outer side of the shell of the screw feeding structure. The upper end of the reactor is connected to the heat exchange chamber via a pipe. The heat exchange chamber is connected to a spray tower 6 via a second pipe 5. The spray tower is connected to a post-treatment structure 7, which includes a wet desulfurization structure, a dry desulfurization structure, and a bag filter dust collection structure. The post-treatment structure is connected to the burner structure 2 via a third pipe 8. A first cooling heat exchange structure 9 is located on the second pipe 5. The first cooling heat exchange structure is connected to a desulfurization slurry preparation tank 10. The desulfurization slurry preparation tank is connected to a storage tank 11. The storage tank is connected to a spray pipe inside the desulfurization tower. The burner structure is connected to the desulfurization tower 12.

[0015] The shell outside of the spiral feeding structure is provided with a second heat exchange chamber 13, and the combustor structure is connected to the second heat exchange chamber.

[0016] The spiral feeding structure is further provided with a heating structure 16 outside.

[0017] The working principle of the utility model is as follows: the oily sludge is heated and pyrolyzed in the reactor, the pyrolysis gas passes through the first heat exchange chamber to preheat the oily sludge in the feeding structure, the pyrolysis gas after heat exchange is cooled by the first cooling heat exchange structure, and then the condensable gas is sprayed in the spray tower for treatment, after which the incondensable gas enters the post-treatment area, the treated incondensable gas enters the combustor structure for combustion, the water after heat exchange of the first heat exchange structure is used for preparing the desulfurization slurry, the temperature of the slurry is improved, so that the desulfurization treatment effect of the flue gas generated by the combustion of the combustor structure is ensured; on the other hand, the flue gas generated by the combustion of the combustor structure can also pass through the second heat exchange chamber to heat and preheat the oily sludge, and the second cooling heat exchange structure is used for cooling.

[0018] It is apparent for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, the scope of the utility model is defined by the appended claims instead of the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims should be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims.

Claims

1. An apparatus for pyrolysis treatment of oil-containing sludge, characterized by: The application relates to a device for treating waste gas, which comprises a reactor, a burner structure arranged below the reactor, a spiral feeding structure arranged beside the reactor, a heat exchange chamber arranged outside the shell of the spiral feeding structure, a pipeline connecting the upper end of the reactor with the heat exchange chamber, a second pipeline connecting the heat exchange chamber with a spray tower, a post-treatment structure connected with the spray tower, a third pipeline connecting the post-treatment structure with the burner structure, a first cooling and heat exchange structure arranged on the second pipeline, a desulfurization slurry preparation tank connected with the first cooling and heat exchange structure, a liquid storage tank connected with the desulfurization slurry preparation tank, a spray pipe arranged in a desulfurization tower and connected with the liquid storage tank, and the burner structure connected with the desulfurization tower.

2. The oil-containing sludge pyrolysis treatment device according to claim 1, characterized in that: A second heat exchange chamber is arranged outside the shell of the spiral feeding structure, the burner structure is connected with the second heat exchange chamber, the second heat exchange chamber is connected with the desulfurization tower through a fourth pipeline, a second cooling and heat exchange structure is arranged on the fourth pipeline, and a cold water outlet on the second cooling and heat exchange structure is connected with the desulfurization slurry preparation tank.

3. The oil-containing sludge pyrolysis processing device according to claim 2, characterized in that: A heating structure is further arranged outside the spiral feeding structure.

4. The oil-containing sludge pyrolysis treatment device according to claim 3, characterized in that: The post-treatment structure comprises a wet deacidification structure, a dry deacidification structure and a cloth bag dust removal structure.

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