A hot air distillation tower

Abstract

The present invention discloses a hot air type dry distillation tower, which relates to the technical field of oil sand dry distillation equipment, including: a shell body, the upper end of the shell body is provided with a material inlet, and the lower end of the shell body is provided with a material outlet; a dry distillation treatment pipe group, each dry distillation treatment pipe group includes several layers of hot air layers and several layers of dry distillation gas collection layers, each layer of hot air layer includes multiple hot air pipes, and each layer of dry distillation gas collection layer includes multiple dry distillation gas collection pipes; an air inlet device, the air inlet ends of all the hot air pipes in each dry distillation treatment pipe group are connected to an air inlet device; an air outlet device, the air outlet device is arranged on the side wall of the shell body, and the air outlet ends of all the hot air pipes in each dry distillation treatment pipe group are connected to an air outlet device; a dry distillation gas outlet device, one end of the dry distillation gas collection pipe is connected to the dry distillation gas outlet device, the other end of the dry distillation gas collection pipe is a closed end, and the lower end of the dry distillation gas collection pipe is provided with a collection tank. The present invention can effectively improve the dry distillation effect.

Description

Technical Field

[0001] The invention relates to the technical field of oil sand distillation equipment, in particular to a hot air type distillation tower. Background Art

[0002] Oil sands are sandstone or other rocks containing natural asphalt. They are typically a mixture of oil sands bitumen (also known as oil sands oil), inorganic materials (such as sand and clay), and water. Oil sands bitumen adheres to the surface of the sand. To extract the oil sands bitumen, a method must be used to separate the oil from the sand. Dry distillation is a commonly used and relatively mature technology.

[0003] Pyrolysis distillation technology is to treat oil sands at high temperature to decompose the oil sand asphalt on the surface of the oil sands into small molecular substances, and then the decomposed products are processed subsequently.

[0004] However, the dry distillation effect of existing oil sand dry distillation equipment is not good.

[0005] Therefore, a new type of oil sand distillation equipment is urgently needed on the market to solve the above problems. Summary of the Invention

[0006] The object of the present invention is to provide a hot air type distillation tower for solving the technical problems existing in the above-mentioned prior art. The oil sand is moved and evenly distributed in the shell body through the hot air pipe, thereby achieving a better heat and mass transfer effect, a good distillation effect, and being conducive to the collection and reuse of the distillation gas, thereby improving the yield of the pyrolysis products in the oil sand.

[0007] To achieve the above object, the present invention provides the following solutions:

[0008] The present invention discloses a hot air type dry distillation tower, comprising:

[0009] A shell body, wherein the upper end of the shell body is provided with a material inlet, and the lower end of the shell body is provided with a material outlet;

[0010] A dry distillation processing pipe group, wherein the dry distillation processing pipe group is provided with several groups, and the several groups of dry distillation processing pipe groups are distributed vertically in the shell body, each group of the dry distillation processing pipe group includes several layers of hot air layers and several layers of dry distillation gas collection layers, each layer of the hot air layer includes multiple hot air pipes, and each layer of the dry distillation gas collection layer includes multiple dry distillation gas collection pipes;

[0011] an air inlet device, the air inlet device being arranged on the side wall of the shell body, the air inlet device being provided in plurality, and the air inlet ends of all the hot air pipes in each dry distillation treatment tube group being connected to one of the air inlet devices;

[0012] an air outlet device, the air outlet device being arranged on the side wall of the shell body, the air outlet device being provided in plurality, and the air outlet ends of all the hot air pipes in each dry distillation treatment pipe group being connected to one of the air outlet devices;

[0013] A dry distillation gas outlet device is provided, wherein one end of the dry distillation gas collecting pipe is connected to the dry distillation gas outlet device, the other end of the dry distillation gas collecting pipe is a closed end, and a collecting tank is provided at the lower end of the dry distillation gas collecting pipe.

[0014] Preferably, each group of the dry distillation treatment tube groups includes four hot air layers and two dry distillation gas collection layers, and a dry distillation gas collection layer is provided above every two hot air layers.

[0015] Preferably, the number of the hot air pipes in two adjacent hot air layers differs by one.

[0016] Preferably, the hot air pipes in two adjacent hot air layers are staggered.

[0017] Preferably, the hot air pipe is a diamond-shaped pipe.

[0018] Preferably, the dry distillation gas outlet device includes a collecting vertical pipe and a dust exhaust box, one end of the dry distillation gas collecting pipe is connected to the collecting vertical pipe, the outlet of the dry distillation gas collecting pipe is connected to the air inlet of the dust exhaust box, and the dust exhaust box is provided with a dry distillation gas outlet.

[0019] Preferably, the lower end of the dust exhaust box is connected to a sedimentation chamber, the cross-sectional area of ​​the upper end of the sedimentation chamber is larger than the cross-sectional area of ​​the lower end of the sedimentation chamber, and the lower end of the sedimentation chamber is a dust exhaust port.

[0020] Preferably, the housing body comprises an upper shell and a lower shell, and the upper shell is fixed to the upper end of the lower shell;

[0021] The upper shell is a square cylindrical structure, and the dry distillation processing tube groups are all arranged in the upper shell;

[0022] The lower shell is a conical structure, and the cross-sectional area of ​​the upper end of the lower shell is larger than the cross-sectional area of ​​the lower end of the lower shell.

[0023] Preferably, the air inlet device is an air inlet box, the air inlet of the air inlet box is connected to the air inlet fan, and the air outlet of the air inlet box is connected to the air inlet end of the hot air pipe;

[0024] The air outlet device is an air outlet box body, the air inlet of the air outlet box is connected to the air outlet end of the hot air pipe, and the air outlet of the air outlet box is connected to an air outlet fan.

[0025] Preferably, a rotary discharge valve is provided at the material outlet.

[0026] Compared with the prior art, the present invention has achieved the following technical effects:

[0027] In the present invention, a certain number of hot air pipes are provided in the dry distillation treatment tube group, each hot air pipe is a closed tube in the shell body and is staggeredly arranged, so that the material is evenly distributed, the material contacts the hot air pipe to achieve heating and dry distillation, the contact is sufficient, the dry distillation effect is enhanced, and there is no blockage, so the dry distillation effect is good; the material dry distillation pyrolysis gas is discharged from the dry distillation gas collecting pipe adjacent to the upper side through the dry distillation gas outlet device, which effectively reduces the resistance and is conducive to the discharge of the dry distillation gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 1 is a front view of a hot air type distillation tower according to an embodiment of the present invention;

[0030] Figure 2 1 is a side view of a hot air type distillation tower according to an embodiment of the present invention;

[0031] In the figure: 1- shell body, 2- air inlet box, 3- air outlet box, 4- hot air pipe, 5- dry distillation gas collecting pipe, 6- material inlet, 7- material outlet, 8- rotary unloading valve, 9- collecting vertical pipe, 10- dust exhaust box, 11- dry distillation gas outlet, 12- dust exhaust port, 13- upper shell, 14- lower shell. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] The object of the present invention is to provide a hot air type distillation tower for solving the technical problems existing in the above-mentioned prior art. The oil sand is moved and evenly distributed in the shell body through the hot air pipe, thereby achieving a better heat and mass transfer effect, a good distillation effect, and being conducive to the collection and reuse of the distillation gas, thereby improving the yield of the pyrolysis products in the oil sand.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figure 1-Figure 2 As shown, this embodiment provides a hot air type distillation tower, comprising:

[0036] The outer shell body 1 is provided with a material inlet 6 at the upper end of the outer shell body 1. A uniform distribution plate can be provided at the material inlet 6. The uniform distribution plate is an umbrella-shaped structure, and the upper end diameter is smaller than the lower end diameter. In this way, the material can be effectively broken up, so that the material falls into the interior of the outer shell body 1 from multiple directions. The lower end of the outer shell body 1 is provided with a material outlet 7;

[0037] The dry distillation processing pipe group is provided with several groups. In this embodiment, there are four groups in total. The several groups of dry distillation processing pipe groups are distributed up and down in the shell body 1. Each group of dry distillation processing pipe groups includes several layers of hot air layers and several layers of dry distillation gas collection layers. Each hot air layer includes multiple hot air pipes 4, and each dry distillation gas collection layer includes several dry distillation gas collection pipes 5.

[0038] An air inlet device is provided on the side wall of the housing body 1. There are multiple air inlet devices. The air inlet ends of all the hot air pipes 4 in each dry distillation treatment tube group are connected to one air inlet device. The air inlet device is used to provide hot air to the hot air pipes 4.

[0039] An air outlet device is provided on the side wall of the shell body 1. There are multiple air outlet devices. The air outlet ends of all the hot air pipes 4 in each dry distillation treatment tube group are connected to one air outlet device. The air outlet device is used to discharge the air in the hot air pipe 4, and the air inlet device and the air outlet device are distributed one by one;

[0040] The dry distillation gas outlet device, one end of the dry distillation gas collecting pipe 5 is connected to the dry distillation gas outlet device, the other end of the dry distillation gas collecting pipe 5 is a closed end, and the lower end of the dry distillation gas collecting pipe 5 is provided with a collecting tank. The pyrolysis dry distillation gas collected by the dry distillation gas collecting pipe 5 is finally discharged through the dry distillation gas outlet device. In addition, in order to facilitate the installation of the dry distillation gas outlet device, the dry distillation gas collecting pipe 5 is distributed vertically to the hot air pipe 4.

[0041] In actual use, the material to be dried is poured into the material inlet 6 above the shell body 1 and flows between the walls of the hot air pipe 4 and the dry distillation gas collection pipe 5 inside the shell body 1. At the same time, the air inlet device provides hot air to the hot air pipe 4, thereby raising the temperature of the hot air pipe 4. The hot air pipe 4 then uses the hot air pipe 4 to provide the material with the necessary heat for dry distillation, causing the material to undergo pyrolysis. The pyrolysis dry distillation gas then enters the dry distillation gas collection pipe 5 through the collection trough on the upper dry distillation gas collection pipe 5, then enters the dry distillation gas outlet device through the dry distillation gas collection pipe 5, and is finally discharged through the dry distillation gas outlet device. The material remains in the shell body 1 for a period of time and, after drying, is discharged from the material outlet 7 below the shell body 1.

[0042] In this embodiment, each group of dry distillation processing tubes includes four layers of hot air layers and two layers of dry distillation gas collection layers, and a dry distillation gas collection layer is set above every two layers of hot air layers. Figure 1 It can be seen that the specific distribution within each group of retort processing tubes (from top to bottom) is retort gas collection layer, hot air layer, hot air layer, retort gas collection layer, hot air layer, and hot air layer.

[0043] In this embodiment, the number of hot air pipes 4 in two adjacent hot air layers differs by one. Specifically, the number of all hot air pipes 4 in the upper hot air layer is one more than the number of all hot air pipes 4 in the lower hot air layer. Figure 1 It can be understood that the number of all hot air pipes 4 in the odd-numbered hot air layers is one more than the number of all hot air pipes 4 in the even-numbered hot air layers, such as Figure 1 The number of hot air pipes 4 in the first hot air layer is one more than the number of hot air pipes 4 in the second hot air layer. Specifically, the number of hot air pipes 4 in odd-numbered layers is preferably twelve, and the number of hot air pipes 4 in adjacent even-numbered layers is preferably eleven.

[0044] In this embodiment, because the number of hot air pipes 4 in two adjacent hot air layers is different, the hot air pipes 4 in the two adjacent hot air layers are staggered. That is, two adjacent hot air pipes 4 in any hot air layer form an isosceles triangle with a corresponding hot air pipe 4 in the adjacent hot air layer, i.e., the hot air pipe 4 is located on the centerline of the other two adjacent hot air pipes 4. This arrangement effectively disperses the material, prevents blockage during the falling process, and improves the heating efficiency of the material.

[0045] In this embodiment, the hot air pipe 4 is a diamond-shaped pipe, meaning its cross-section is diamond-shaped, and the top angle of the hot air pipe 4 is less than 60°. This configuration not only better disperses the material, thereby preventing material blockage, but also increases the contact area between the hot air pipe 4 and the material, thereby improving the heating effect.

[0046] In addition, if Figure 1 As shown, the cross-section of the dry distillation gas collecting pipe 5 is a pentagon, the lower end of which is a plane for setting a collecting trough, and the top is a pointed structure for breaking up the material.

[0047] In this embodiment, if Figure 2 The dry distillation gas outlet device includes a collecting vertical pipe 9 and a dust box 10. One end of the dry distillation gas collecting pipe 5 (the end away from the closed end) is connected to the collecting vertical pipe 9, and the outlet of the dry distillation gas collecting pipe 5 is connected to the air inlet of the dust box 10. The dust box 10 is provided with a dry distillation gas outlet 11. In actual use, the pyrolysis dry distillation gas will enter the collecting vertical pipe 9 through the dry distillation gas collecting pipe 5, and then be transported by the collecting vertical pipe 9 to the dust box 10, and finally discharged through the dry distillation gas outlet 11 of the dust box 10.

[0048] In addition, a heating structure is provided on the collecting vertical pipe 9 and the dust exhaust box 10, which can be electric heating or other heating structures.

[0049] In this embodiment, the lower end of the dust box 10 is connected to a settling chamber. The cross-sectional area of ​​the upper end of the settling chamber is larger than the cross-sectional area of ​​the lower end of the settling chamber. The lower end of the settling chamber is a dust outlet 12. Dust in the dust box 10 will settle downward and then enter the settling chamber. The settling chamber, with its tapered structure, can collect the dust and then slowly transport it to the dust outlet 12, and finally be discharged from the dust outlet 12.

[0050] In this embodiment, the housing body 1 includes an upper shell 13 and a lower shell 14 , and the upper shell 13 is fixed to the upper end of the lower shell 14 ;

[0051] The upper shell 13 is a square cylindrical structure, and the dry distillation processing tube group is arranged in the upper shell 13;

[0052] The lower shell 14 is a conical structure. The cross-sectional area of ​​the upper end of the lower shell 14 is larger than the cross-sectional area of ​​the lower end of the lower shell 14 , and the entire structure is an inverted pyramid.

[0053] In this embodiment, the air inlet device is an air inlet box 2, the air inlet of the air inlet box 2 is connected to the air outlet of the air inlet fan through a pipeline, the air inlet of the air inlet fan and the hot air source are connected through a pipeline, and the air outlet of the air inlet box 2 is connected to the air inlet of the hot air pipe 4;

[0054] The air outlet device is an air outlet box 3 , the air inlet of the air outlet box 3 is connected to the air outlet end of the hot air pipe 4 , and the air outlet of the air outlet box 3 is connected to an air outlet fan.

[0055] Each dry distillation processing tube group corresponds to an air inlet box 2 and an air outlet box 3, and the air inlet box 2 and the air outlet box 3 are arranged opposite to each other. The function of the air inlet fan and the air outlet fan is to provide power for hot air transportation.

[0056] In this embodiment, a rotary discharge valve 8 is provided at the material outlet 7 to control the discharge of the material.

[0057] This specification uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A hot air type distillation tower, characterized in that, include: A shell body, wherein the upper end of the shell body is provided with a material inlet, and the lower end of the shell body is provided with a material outlet; A dry distillation treatment tube group, wherein the dry distillation treatment tube group is provided with several groups, and the several groups of dry distillation treatment tube groups are distributed up and down in the shell body, each group of the dry distillation treatment tube group includes several layers of hot air layers and several layers of dry distillation gas collection layers, each layer of the hot air layer includes multiple hot air pipes, and each layer of the dry distillation gas collection layer includes several dry distillation gas collection pipes, and the dry distillation gas collection pipes are distributed perpendicular to the hot air pipes; an air inlet device, the air inlet device being arranged on a side wall of the shell body, wherein a plurality of the air inlet devices are provided, and the air inlet ends of all the hot air pipes in each dry distillation treatment tube group are connected to one of the air inlet devices; an air outlet device, the air outlet device being arranged on a side wall of the shell body, and a plurality of the air outlet devices being provided, and the air outlet ends of all the hot air pipes in each dry distillation treatment tube group are connected to one of the air outlet devices; a dry distillation gas outlet device, wherein one end of the dry distillation gas collecting pipe is connected to the dry distillation gas outlet device, the other end of the dry distillation gas collecting pipe is a closed end, and a collecting tank is provided at the lower end of the dry distillation gas collecting pipe; The dry distillation gas outlet device includes a collecting vertical pipe and a dust exhaust box. One end of the dry distillation gas collecting pipe is connected to the collecting vertical pipe. The outlet of the dry distillation gas collecting pipe is connected to the air inlet of the dust exhaust box. The dust exhaust box is provided with a dry distillation gas outlet.

2. The hot air type distillation tower according to claim 1, wherein: Each group of the dry distillation treatment tube groups includes four hot air layers and two dry distillation gas collection layers, and a dry distillation gas collection layer is arranged above every two hot air layers.

3. The hot air type distillation tower according to claim 1, wherein: The number of the hot air pipes in two adjacent hot air layers differs by one.

4. The hot air type distillation tower according to claim 1, wherein: The hot air pipes in two adjacent hot air layers are staggered.

5. The hot air type distillation tower according to claim 1, wherein: The hot air pipe is a diamond-shaped pipe.

6. The hot air type distillation tower according to claim 1, wherein: The lower end of the dust exhaust box is connected to a sedimentation chamber, the upper end cross-sectional area of ​​the sedimentation chamber is larger than the lower end cross-sectional area of ​​the sedimentation chamber, and the lower end of the sedimentation chamber is a dust exhaust port.

7. The hot air type dry distillation tower according to claim 1, wherein: The housing body includes an upper shell and a lower shell, wherein the upper shell is fixed to the upper end of the lower shell; The upper shell is a square cylindrical structure, and the dry distillation processing tube groups are all arranged in the upper shell; The lower shell is a conical structure, and the cross-sectional area of ​​the upper end of the lower shell is larger than the cross-sectional area of ​​the lower end of the lower shell.

8. The hot air type dry distillation tower according to claim 1, wherein: The air inlet device is an air inlet box, the air inlet of the air inlet box is connected to the air inlet fan, and the air outlet of the air inlet box is connected to the air inlet end of the hot air pipe; The air outlet device is an air outlet box body, the air inlet of the air outlet box is connected to the air outlet end of the hot air pipe, and the air outlet of the air outlet box is connected to an air outlet fan.

9. The hot air type dry distillation tower according to claim 1, wherein: A rotary discharge valve is provided at the material outlet.

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