Titanium silicalite molecular sieve roasting furnace with adjustable atmosphere

Abstract

The atmosphere-adjustable titanium silicalite molecular sieve roasting furnace provided by the invention comprises a hearth barrel, and a ceramic furnace brick structure is mounted on the inner surface of the hearth barrel; the ceramic furnace brick structure further comprises a radiant tube heating device which is installed in the ceramic furnace brick structure. The radiant tube heating device is connected with a power source, a temperature measuring system is further installed in the hearth barrel, the feeding end of the hearth barrel is connected with a feeding system, and the discharging end of the hearth barrel is provided with a discharging system. The atmosphere-adjustable titanium silicalite molecular sieve roasting furnace is adjustable in temperature, high in universality, applicable to other materials similar to technological processes and wide in application range, the materials are heated in a new heating mode, the previous technological process of roasting the titanium silicalite molecular sieve materials in a roller kiln is simplified, the length of a technological assembly line is greatly shortened, and the production efficiency is improved. The operation assembly line is shortened, and the product quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of roasting equipment, in particular to a titanium silicon molecular sieve roasting furnace with adjustable atmosphere. Background Art

[0002] Titanium silicate molecular sieve is a molecular sieve material with broad application prospects. It is mainly used in chemical catalysis, material preparation and environmental governance. With the continuous development and application of advanced manufacturing technology, silicon titanium molecular sieve is more and more widely used in various fields. Therefore, titanium silicate molecular sieve has a high economic value.

[0003] At present, after titanium silicon molecular sieve is formed, the organic template agent is calcined in a roller kiln, which has low production efficiency and a long production line. Such calcination equipment in the prior art has certain limitations. Summary of the invention

[0004] In view of the deficiencies in the above-mentioned prior art, the present invention provides a titanium silicon molecular sieve roasting furnace with adjustable atmosphere, comprising: a furnace barrel, the inner surface of which is installed with a ceramic furnace brick structure; a radiant tube heating device, which is installed in the ceramic furnace brick structure; the radiant tube heating device is connected to a power supply, a temperature measuring system is also installed inside the furnace barrel, the feed end of the furnace barrel is connected to the feed system, and a discharge system is installed at the discharge end.

[0005] In some embodiments, the ceramic furnace brick structure includes a refractory ceramic brick layer and an insulating ceramic brick layer; the insulating ceramic brick layer is arranged close to the inner surface of the furnace cylinder, the outer side of the refractory ceramic brick layer is arranged close to the insulating ceramic brick layer, and the inner side is in contact with the material; the radiant tube heating device is installed inside the refractory ceramic brick layer.

[0006] In some embodiments, the refractory ceramic brick layer is provided with ridges on both the inner and outer sides, the outer ridges cooperate with the insulating ceramic brick layer to fix the refractory ceramic brick layer, and the inner ridges are used to stir the material.

[0007] In some of the embodiments, the furnace bricks of each layer of the refractory ceramic brick layer and the insulating ceramic brick layer are installed with staggered joints along the axial direction of the furnace tube.

[0008] In some of the embodiments, the furnace cylinder comprises a metal cylinder, a metal baffle is provided on the cylinder wall of the metal cylinder, and a copper slip ring, a fin tube, a roller and a gear ring are installed on the outer side of the metal cylinder.

[0009] In some of the embodiments, the insulating ceramic brick layer is provided with square openings for cooperating with the metal baffle on the wall of the metal cylinder to fix the insulating ceramic brick layer.

[0010] In some of the embodiments, the entire length of the furnace barrel is 12 m, and the feed end and the discharge end are arranged at an inclination angle of 1°.

[0011] In some of the embodiments, the roasting furnace further includes a driving system, and the driving system is installed together with the furnace barrel, and a supporting system is also provided under the furnace barrel.

[0012] In some embodiments, the temperature measurement system includes multiple temperature measurement points, and the temperature measurement system is fixed by a cantilever mechanism and heavy object pulling.

[0013] In some embodiments, the discharging system includes a discharging box, which is provided with a nitrogen inlet. Nitrogen enters the furnace cylinder from the discharging end and moves along the opposite direction of the material through the interior of the furnace cylinder, and is discharged from the exhaust gas outlet at the upper end of the feeding screw of the feeding system.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The atmosphere-adjustable titanium silicon molecular sieve roasting furnace provided by the present invention has adjustable temperature and strong versatility, and can be applied to other materials with similar process flows and has a wide range of uses. The present invention designs a new heating method for heating materials, simplifies the process flow of the previous titanium silicon molecular sieve material roller kiln roasting, greatly shortens the length of the process line, shortens the operation line, and improves product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a titanium silicon molecular sieve calcining furnace with adjustable atmosphere shown in an embodiment of the present invention;

[0017] Figure 2 It is a schematic diagram of the furnace barrel structure shown in an embodiment of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of a ceramic furnace brick according to an embodiment of the present invention;

[0019] Figure 4 This is a schematic diagram of the staggered installation structure of furnace bricks shown in an embodiment of the present invention;

[0020] Wherein, the reference numerals are:

[0021] 1-furnace barrel;

[0022] 101-metal cylinder;

[0023] 102-Metal baffle;

[0024] 103-copper slip ring;

[0025] 104- finned tube;

[0026] 105-rolling circle;

[0027] 106-gear ring;

[0028] 2- Ceramic furnace brick structure;

[0029] 2011-convex ridge;

[0030] 3- Radiant tube heating device;

[0031] 4- Temperature measurement system;

[0032] 5-Feeding system;

[0033] 501-feeding screw;

[0034] 6-Discharging system;

[0035] 201- refractory ceramic brick layer;

[0036] 202-insulating ceramic brick layer;

[0037] 7-Drive system;

[0038] 8-Support system. DETAILED DESCRIPTION

[0039] The technical solution of the present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments to further understand the purpose, solution and effect of the present invention, but it is not intended to limit the scope of protection of the claims attached to the present invention.

[0040] Certain words are used in the specification and subsequent claims to refer to specific components or parts. It should be understood by those of ordinary skill in the art that technical users or manufacturers may refer to the same component or part by different nouns or terms. This specification and subsequent claims do not use differences in names as a way to distinguish components or parts, but use differences in the functions of components or parts as the criteria for distinction. "Including" and "comprising" mentioned throughout the specification and subsequent claims are open-ended terms and should be interpreted as "including but not limited to". In addition, the word "connect" here includes any direct and indirect electrical connection means. Indirect electrical connection means include connection through other devices.

[0041] It should be noted that, in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and "about", or "approximately", "substantially", "left and right" and the like indicating directions or positional relationships or parameters are all based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description content, and do not indicate or imply that the referred device or element must have a specific direction, specific size, or be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0042] See also Figure 1-4 The present embodiment provides an atmosphere-adjustable titanium silicon molecular sieve roasting furnace, comprising: a furnace barrel 1, a ceramic furnace brick structure 2 is installed on the inner surface of the furnace barrel 1; a radiation tube heating device 3, the radiation tube heating device 3 is installed in the ceramic furnace brick structure 2; the radiation tube heating device 3 is connected to a power supply, a temperature measuring system 4 is also installed inside the furnace barrel 1, the feeding end of the furnace barrel 1 is connected to the feeding system 5, and a discharging system 6 is installed at the discharging end.

[0043] The ceramic furnace brick structure 2 includes a refractory ceramic brick layer 201 and an insulating ceramic brick layer 202; the insulating ceramic brick layer 202 is arranged close to the inner surface of the furnace barrel 1, the outer side of the refractory ceramic brick layer 201 is arranged close to the insulating ceramic brick layer 202, and the inner side is in contact with the material; the radiant tube heating device 3 is installed inside the refractory ceramic brick layer 201 to provide heat energy for the entire roasting furnace. When the material is roasted, the ceramic furnace brick structure 2 is heated by the radiant tube heating device 3, and the heating of the ceramic furnace brick structure 2 plays a role in accumulating heat. At the same time, the refractory ceramic brick layer is in contact with the material to heat and roast the material, and the insulating ceramic brick layer plays a role in heat preservation and heat insulation, ensuring that the heat generated by the radiant tube heating device can be better concentrated in the furnace, and at the same time, the temperature outside the furnace barrel will not be too high.

[0044] In this embodiment, ridges 2011 are provided inside and outside the refractory ceramic brick layer 201. The outer ridges 2011 cooperate with the insulating ceramic brick layer 202 to fix the refractory ceramic brick layer 201, and the inner ridges are used to stir the material to ensure that the material is heated evenly.

[0045] In order to prevent the deformation and uneven stress of the furnace bricks caused by heating, the furnace bricks of each layer of the refractory ceramic brick layer 201 and the insulating ceramic brick layer 202 are staggered and installed along the axis of the furnace tube (see Figure 4); the furnace barrel 1 includes a metal barrel 101, a metal baffle 102 is provided on the barrel wall of the metal barrel 101, and a copper slip ring 103, a fin tube 104, a rolling ring 105 and a gear ring 106 are installed on the outer side of the metal barrel 101; the insulating ceramic brick layer 202 is provided with a square opening for cooperating with the metal baffle 102 on the barrel wall of the metal barrel 1 to fix the insulating ceramic brick layer 202.

[0046] In this embodiment, the entire furnace barrel 1 is 12m long, and the feed end and the discharge end are arranged at an inclination angle of 1°. The material is fed into the furnace barrel 1 by the feed screw 501 at the feed end, and as the furnace slowly rotates, it is driven by the ridges on the refractory ceramic brick layer to move toward the discharge end to complete the roasting process.

[0047] The atmosphere-adjustable titanium silicon molecular sieve roasting furnace provided in this embodiment further includes a driving system 7 , which is installed together with the furnace barrel 1 , and a supporting system 8 is also provided below the furnace barrel 1 .

[0048] In this embodiment, the temperature measurement system 4 includes multiple temperature measurement points, and the temperature measurement system 4 is fixed by a cantilever mechanism and a heavy object pulling. The temperature measurement system is used to measure the material temperature at a specific position inside the device. Specifically, for example, three temperature measurement points can be set.

[0049] The discharge system 6 in this embodiment includes a discharge box. The discharge mechanism in the discharge system can effectively transport the roasted materials to the outside of the furnace barrel 1 to prevent them from accumulating at the discharge port and blocking the discharge. A nitrogen inlet is provided on the discharge box. Nitrogen enters the furnace barrel 1 from the discharge end and passes through the furnace barrel 1 in the opposite direction of the movement of the materials, and is discharged from the tail gas discharge port at the upper end of the feed screw 501 of the feed system 5. The main function of nitrogen is to control the combustion degree of the materials in the roasting furnace and prevent flash explosion.

[0050] The atmosphere adjustable titanium silicon molecular sieve roasting furnace provided in this embodiment is first turned on the heating system before operation to heat the ceramic layer in the furnace barrel 1. When the furnace temperature is raised to the process requirements, the material is fed into the furnace barrel 1 through the feed inlet through the feed screw to heat and roast the material. The material is indirectly heated in the furnace barrel to achieve the purpose of roasting. During the roasting process, the flammable substances in the material must be completely burned in the roasting furnace, and the material temperature must be controlled not to exceed the temperature.

[0051] During the roasting process, due to the slow rotation of the inclined furnace barrel 1, the material will be roasted and moved from the feeding end to the discharging end under the action of gravity, and finally sent out of the roasting furnace by the furnace tail discharging device to the next unit of equipment;

[0052] The ridges on the refractory ceramic bricks in the roasting furnace can extend the residence time of the material in the furnace tube, so that the material can be fully roasted, and can also make the roasted material mixed and heated evenly. The speed of the equipment is adjusted and controlled by frequency conversion to meet the residence time of the material in the furnace so that the produced products meet the process requirements. The heat required for roasting is provided by the radiation tube heating device 3, which heats the material to the process required temperature through radiation heat transfer. The material is roasted at a constant temperature in the roasting furnace for 2h-2.5h, and the catalyst product after roasting is collected in a tank.

[0053] The roasting furnace adopts centralized control mode, with functions such as driving, temperature control, recording, protection and alarm. The temperature control adopts a digital display regulator, which has a continuous adjustment function, sensitive response, clear and intuitive readings, and easy operation. The over-temperature alarm is controlled by the temperature controller. Once over-temperature occurs, the electrical contact is closed, the alarm light is on, the "over-temperature" indicator on the panel is on, and the heating power is automatically cut off.

[0054] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A titanium silicon molecular sieve roasting furnace with adjustable atmosphere, Features: include: A furnace cylinder, wherein a ceramic furnace brick structure is installed on the inner surface of the furnace cylinder; A radiant tube heating device, the radiant tube heating device is installed in the ceramic furnace brick structure; The radiant tube heating device is connected to a power source, a temperature measuring system is also installed inside the furnace barrel, the feeding end of the furnace barrel is connected to the feeding system, and a discharging system is installed at the discharging end.

2. The atmosphere adjustable titanium silicon molecular sieve roasting furnace according to claim 1, Features: The ceramic furnace brick structure comprises a refractory ceramic brick layer and an insulating ceramic brick layer; The insulating ceramic brick layer is arranged close to the inner surface of the furnace cylinder, the outer side of the refractory ceramic brick layer is arranged close to the insulating ceramic brick layer, and the inner side is in contact with the material; The radiant tube heating device is installed inside the refractory ceramic brick layer.

3. The atmosphere adjustable titanium silicon molecular sieve roasting furnace according to claim 2, Features: The refractory ceramic brick layer is provided with ridges on both the inner and outer sides. The outer ridges cooperate with the insulating ceramic brick layer to fix the refractory ceramic brick layer, and the inner ridges are used to stir materials.

4. The atmosphere adjustable titanium silicon molecular sieve roasting furnace according to claim 2, Features: The furnace bricks of each layer of the refractory ceramic brick layer and the heat-insulating ceramic brick layer are installed with staggered joints along the axial direction of the furnace barrel.

5. The atmosphere adjustable titanium silicon molecular sieve roasting furnace according to claim 2, Features: The furnace cylinder comprises a metal cylinder, a metal baffle is arranged on the cylinder wall of the metal cylinder, and a copper slip ring, a fin tube, a rolling ring and a gear ring are installed on the outer side of the metal cylinder.

6. The atmosphere adjustable titanium silicon molecular sieve roasting furnace according to claim 5, Features: The heat-insulating ceramic brick layer is provided with square openings for cooperating with the metal baffle on the cylinder wall of the metal cylinder to fix the heat-insulating ceramic brick layer.

7. The atmosphere adjustable titanium silicon molecular sieve roasting furnace according to claim 1, Features: The entire furnace barrel is 12 m long, and the feed end and the discharge end are arranged at an inclination angle of 1°.

8. The atmosphere adjustable titanium silicon molecular sieve roasting furnace according to claim 1, Features: It also includes a driving system, which is installed together with the furnace barrel, and a supporting system is also provided under the furnace barrel.

9. The atmosphere adjustable titanium silicon molecular sieve roasting furnace according to claim 1, Features: The temperature measurement system comprises a plurality of temperature measurement points, and the temperature measurement system is fixed by a cantilever mechanism and a heavy object pulling.

10. The atmosphere adjustable titanium silicon molecular sieve roasting furnace according to claim 1, Features: The discharge system includes a discharge box, which is provided with a nitrogen inlet. Nitrogen enters the furnace barrel from the discharge end and moves in the opposite direction of the material through the furnace barrel, and is discharged from the tail gas discharge port at the upper end of the feed spiral of the feed system.

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