Oily sludge combustion rotary furnace

Abstract

The utility model discloses an oily sludge combustion rotary furnace which comprises a combustion chamber, a cylinder body and a discharge cover, the discharging end of the cylinder body is rotationally and hermetically connected with the discharging cover, and a discharging hole is formed in the discharging cover; the feeding end of the barrel is fixedly connected with the combustion chamber, an annular feeding port is formed in the outer wall of the combustion chamber, a feeding cover covers the annular feeding port, the feeding cover is rotationally and hermetically connected with the outer wall of the combustion chamber on the outer side of the annular feeding port, a feeding port is formed in the top end of the feeding cover, and an air inlet is formed in the bottom end of the feeding cover; a material guiding cone is arranged in the feeding cover and arranged under the feeding port, the large-diameter end of the material guiding cone is fixedly connected with the side wall of the feeding cover, the tip end of the material guiding cone faces the interior of the barrel, and a plurality of baffles are evenly fixed between the outer wall of the material guiding cone and the inner wall of the barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of oil exploitation, in particular to an oil-containing sludge combustion rotary furnace. Background Art

[0002] Oily sludge refers to sludge mixed with heavy oils such as crude oil, various refined oils, and residual oil. Oily sludge does not exist inherently in nature, but is caused by various accidents, improper operation, obsolete, damaged, and corroded equipment in various industries, civil, and personal areas related to crude oil and refined oil, such as oil field exploitation, oil refining process, transportation, use, and storage, which causes crude oil and refined oil to run, bubble, drip, and leak to the ground, deposit on the sea, lake, and river bottom, and mix with mud and water to form a mixture of oil, soil, water, and even other pollutants.

[0003] The leakage amount of oily sludge varies greatly, resulting in large differences in the oil content and soil composition of the oily sludge. In particular, the oily sludge is very viscous and most of it is in agglomerate form. So far, there is no suitable combustion system, and it has been treated by heating separation, which is costly, incomplete, and difficult to treat the separated products. At the same time, fuel is needed to calcine the cement clinker during the production process, which consumes a lot of energy and is costly. Utility Model Content

[0004] The utility model aims to provide a rotary kiln for burning oily sludge.

[0005] The utility model is implemented by the following technical scheme: an oily sludge combustion rotary furnace, which comprises a combustion chamber, a cylinder, and a discharge cover;

[0006] The discharge end of the cylinder is rotatably and sealingly connected to the discharge cover, and the discharge cover is provided with a discharge port;

[0007] The feed end of the cylinder is fixedly connected to the combustion chamber, an annular feed port is provided on the outer wall of the combustion chamber, a feed cover is provided at the annular feed port, the feed cover is rotatably sealedly connected to the outer wall of the combustion chamber outside the annular feed port, a feed port is provided at the top end of the feed cover, and an air inlet is provided at the bottom end of the feed cover;

[0008] A material guide cone is provided inside the feed hood, and the material guide cone is placed directly below the feed port. The large-diameter end of the material guide cone is fixedly connected to the side wall of the feed hood, and the tip of the material guide cone is arranged toward the interior of the cylinder. A plurality of baffles are evenly fixed between the outer wall of the material guide cone and the inner wall of the cylinder.

[0009] Furthermore, the feed port of the feed cover is connected to the outlet of the feeding device through a pipeline.

[0010] Furthermore, the material guiding cone is coaxially arranged with the cylinder.

[0011] Furthermore, the air inlet of the feed hood is connected to the tertiary air duct of the cement clinker calcining rotary kiln.

[0012] The utility model has the advantages that the oily sludge enters the rotary kiln through the feeding device, and the hot air generated by the cement clinker calcining rotary kiln in the cement clinker production process is sent to the air inlet of the feed cover through the tertiary air duct. After the oily sludge contacts the hot air with a temperature of more than 930°C, the moisture on the oily sludge is rapidly volatilized, and the volatile gas on the surface of the oily sludge is rapidly burned to generate heat, which can be used for the decomposition furnace in the cement clinker production process. The product after combustion in the rotary kiln is directly fed into the clinker for use, without generating pollutants, thus saving the treatment cost.

[0013] The heat and solid waste generated during the treatment of oily sludge are used in cement clinker production, saving energy consumption in the cement clinker production process and the cost of treating oily sludge solid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0017] In the figure: cylinder 1, discharge cover 2, discharge port 3, combustion chamber 4, annular opening 5, feed cover 6, feed port 7, feeding device 8, air inlet 9, tertiary air duct 10, guide cone 11, baffle 12. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-2As shown, the oily sludge combustion rotary kiln includes a combustion chamber 4, a cylinder 1, and a discharge cover 2;

[0020] The discharge end of the cylinder 1 is rotatably sealed with the discharge cover 2, and a discharge port 3 is provided on the discharge cover 2. The products after combustion in the rotary kiln are directly sent to the clinker for use, without generating pollutants, thus saving the processing cost.

[0021] The feed end of the cylinder 1 is fixedly connected to the combustion chamber 4, and an annular opening 5 is provided on the outer wall of the combustion chamber 4. A feed hood 6 is provided at the annular opening 5. The feed hood 6 is rotatably and sealedly connected to the outer wall of the combustion chamber 4 outside the annular opening 5. A feed port 7 is provided at the top of the feed hood 6. The feed port 7 of the feed hood 6 is connected to the outlet of a feeding device 8 through a pipeline. An air inlet 9 is provided at the bottom of the feed hood 6. The air inlet 9 of the feed hood 6 is connected to a tertiary air duct 10 of a cement clinker calcining rotary kiln. The oily sludge enters the rotary kiln through the feeding device 8. The hot air generated by the cement clinker calcining rotary kiln in the cement clinker production process is delivered to the air inlet 9 of the feed hood 6 through the tertiary air duct 10. After the oily sludge contacts the hot air with a temperature of more than 930°C, the moisture on the oily sludge evaporates rapidly, and the volatile gas on the surface of the oily sludge burns rapidly to generate heat. This part of the heat can be supplied to the decomposition furnace in the cement clinker production process.

[0022] A material guide cone 11 is provided inside the feed hood 6. The material guide cone 11 is coaxially arranged with the cylinder 1 and is placed just below the feed port 7. The large-diameter end of the material guide cone 11 is fixedly connected to the side wall of the feed hood 6. The tip of the material guide cone 11 is arranged toward the inside of the cylinder 1. High-temperature hot air enters the rotary kiln through the tertiary air duct 10 to heat the material guide cone 11, thereby generating a gas barrier between the oily sludge and the vertebral body, which is not easy to adhere to the vertebral body.

[0023] A plurality of baffles 12 are evenly fixed between the outer wall of the guide cone 11 and the inner wall of the cylinder 1. The baffles 12 are welded together with the inner wall of the cylinder 1 to form a whole. The baffles 12 connect the guide cone 11 and the cylinder 1 together on the one hand, and on the other hand, prevent the oily sludge from sliding along the circumference and falling into the air inlet duct, thereby intercepting the oily sludge.

[0024] The specific operation process of this embodiment is as follows:

[0025] Cement clinker production process: including crushing and pre-homogenization, raw material preparation, raw material homogenization, preheating and decomposition in the decomposition furnace (material dispersion, gas-solid separation, pre-decomposition), cement clinker burning in the cement clinker calcining rotary kiln, cement grinding, and cement packaging;

[0026] Treatment process of oily sludge: The oily sludge is sent to the combustion chamber 4 through the feeding port 7 of the feeding cover 6 by the feeding device 8, and at the same time, the hot air generated by the cement clinker calcining rotary kiln is sent to the air inlet 9 of the feeding cover 6 by the tertiary air duct 10, and the tertiary air heats the guide cone 11 inside the feeding cover 6;

[0027] When the oily sludge contacts the guide cone 11 during the rotation of the cylinder 1, the water on the oily sludge evaporates rapidly, and the volatile gas on the surface of the oily sludge burns rapidly to generate heat, so that the sticky components of the oily sludge disappear. At this time, the combustion products slide down along the guide cone 11 into the inside of the cylinder 1;

[0028] The heat generated by combustion in the cylinder 1 is sent to the decomposition furnace in the cement clinker production process for use; the combustion products are directly sent to the cement clinker for use;

[0029] The heat and combustion products generated during the treatment of oily sludge are used in cement clinker production, saving energy consumption in the cement clinker production process and the cost of treating oily sludge solid waste.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Oily sludge combustion rotary kiln, characterized in that: It includes a combustion chamber, a cylinder, and a discharge cover; The discharge end of the cylinder is rotatably and sealingly connected to the discharge cover, and the discharge cover is provided with a discharge port; The feed end of the cylinder is fixedly connected to the combustion chamber, an annular feed port is provided on the outer wall of the combustion chamber, a feed cover is provided at the annular feed port, the feed cover is rotatably sealedly connected to the outer wall of the combustion chamber outside the annular feed port, a feed port is provided at the top end of the feed cover, and an air inlet is provided at the bottom end of the feed cover; A material guide cone is provided inside the feed hood, and the material guide cone is placed directly below the feed port. The large-diameter end of the material guide cone is fixedly connected to the side wall of the feed hood, and the tip of the material guide cone is arranged toward the interior of the cylinder. A plurality of baffles are evenly fixed between the outer wall of the material guide cone and the inner wall of the cylinder.

2. The oily sludge combustion rotary kiln according to claim 1, characterized in that: The feed port of the feed cover is connected with the outlet of the feeding device through a pipeline.

3. The oily sludge combustion rotary kiln according to claim 2, characterized in that: The material guiding cone is coaxially arranged with the cylinder.

4. The oily sludge combustion rotary kiln according to claim 3, characterized in that: The air inlet of the feed cover is connected to the tertiary air duct of the cement clinker calcining rotary kiln.

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