DMTO device for reducing gas-solid content of product

Abstract

The utility model discloses a DMTO device for reducing gas-solid content of a product, which comprises a positioning frame, a reaction kettle is fixedly connected in the positioning frame, a through hole is formed in the upper surface of the reaction kettle, a driving motor is mounted on the upper surface of the reaction kettle, the output end of the driving motor is fixedly connected with a rotating rod, and the rotating rod is fixedly connected with a rotating shaft. The outer surface of the rotating rod is fixedly connected with stirring rods which are arranged at equal intervals, a cavity is formed in the reaction kettle, a heating wire is arranged in the cavity, a storage tank is mounted in the reaction kettle, a multi-stage cyclone separator is mounted in the reaction kettle, and a three-stage cyclone separator is mounted in the reaction kettle. According to the device, catalyst particles can be intercepted by using the back-blowing filter, and intercepted catalyst fine powder is back-blown out of the filter by using nitrogen or fuel gas, so that the situation that the catalyst with small particle size cannot be recycled is avoided, the catalyst is prevented from being adhered to a tower tray and a heat exchanger tube bundle, and the running stability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of chemical production especially a DMTO device of reducing product gas solid content. BACKGROUND

[0002] Low carbon olefins such as ethylene and propylene are important basic chemical raw materials, with the development of China's national economy, especially the development of modern chemical industry, the demand for low carbon olefins is rising, and the contradiction between supply and demand will become increasingly prominent, MTO process of methanol to ethylene and propylene and MTP process of methanol to propylene are important chemical technologies at present, which takes coal or natural gas synthesized methanol as raw material to produce low carbon olefins, and is the core technology of developing non-petroleum resources to produce ethylene, propylene and other products.

[0003] The DMTO reaction product gas of olefin No. 2 plant MTO workshop is recovered in turn by built-in first-stage, second-stage and externally placed third-stage and fourth-stage cyclone separators, after the existing DMTO process product gas is separated by the third-stage and fourth-stage cyclone separators to carry catalyst fine powder, the catalyst with small particle size cannot be recovered, and enters the subsequent water system with the product gas, which is easy to adhere to the tower tray and heat exchanger tube bundle, which seriously affects the stable operation, therefore, we provide a DMTO device for reducing product gas solid content to solve the above problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a DMTO device for reducing product gas solid content to solve the problems in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical scheme:

[0006] A DMTO device for reducing product gas solid content, comprising a positioning frame, a reaction kettle is fixedly connected inside the positioning frame, a through hole is formed in the upper surface of the reaction kettle, a driving motor is installed on the upper surface of the reaction kettle, a rotating rod is fixedly connected to the output end of the driving motor, stirring rods are fixedly connected at equal distances on the outer surface of the rotating rod, a cavity is formed in the inside of the reaction kettle, heating wires are arranged in the inside of the cavity, a storage tank is installed in the inside of the reaction kettle, a multistage cyclone separator is installed in the inside of the reaction kettle, a third-stage cyclone separator is installed in the inside of the reaction kettle, a fourth-stage cyclone separator is installed in the inside of the reaction kettle, and a backflush filter is installed in the inside of the reaction kettle.

[0007] In further embodiments, a discharge pipe is fixedly communicated with the bottom end of the reaction kettle, and a control valve is arranged on the outer surface of the discharge pipe.

[0008] In further embodiments, the output end of the four-stage cyclone separator is in fixed communication with the outer surface of the discharge pipe, and the output end of the multi-stage cyclone separator is in fixed communication with the bottom end of the storage tank.

[0009] In further embodiments, the upper surface of the reaction kettle is in fixed communication with a charging pipe, and the top end of the charging pipe is provided with a charging valve.

[0010] In further embodiments, the upper surface of the reaction kettle is in fixed communication with a fixing pipe, and the top end of the fixing pipe is provided with a pressure gauge.

[0011] In further embodiments, the upper surface of the storage tank is in fixed communication with a fixing cylinder, and the top end of the fixing cylinder is provided with a sealing cover.

[0012] In further embodiments, the bottom surface of the positioning frame is fixedly connected with four supporting legs, and the bottom end of each supporting leg is fixedly connected with an anti-skid seat.

[0013] In further embodiments, the front surface of the positioning frame is fixedly connected with a controller, and the front surface of the controller is provided with a display screen.

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

[0015] The device can stir the material by cooperating the driving motor, the rotating rod and the stirring rod, heat the material by the heating wire, improve the reaction efficiency of the material, recycle the catalyst fine powder by cooperating the multi-stage cyclone separator, the three-stage cyclone separator and the four-stage cyclone separator, intercept the catalyst particulate matter by the back-blowing filter, blow out the filter by the nitrogen or fuel gas, avoid the catalyst with small particle size from being recycled, prevent the catalyst from adhering to the tower tray and the heat exchanger tube bundle, and improve the stability of the device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The device is used for reducing the product gas solid content.

[0017] Figure 2 The device is used for reducing the product gas solid content.

[0018] Figure 3 The device is used for reducing the product gas solid content.

[0019] Figure 4 The device is used for reducing the product gas solid content.

[0020] In the figure: 1, positioning frame; 2, reaction kettle; 3, through hole; 4, driving motor; 5, rotating rod; 6, stirring rod; 7, discharge pipe; 8, control valve; 9, cavity; 10, heating wire; 11, multi-stage cyclone separator; 12, three-stage cyclone separator; 13, four-stage cyclone separator; 14, back flushing filter; 15, storage tank; 16, fixed cylinder; 17, sealing cover; 18, supporting leg; 19, anti-skid seat; 20, controller; 21, display screen; 22, fixed pipe; 23, pressure gauge; 24, feeding pipe; 25, feeding valve. DETAILED DESCRIPTION

[0021] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can be explicitly or implicitly included one or more. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0022] In the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] The technical solutions in the embodiments of the present application will be described clearly and completely in the following description of the embodiments of the present application, obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary skilled in the art without creative labor belong to the scope of protection of the present application.

[0024] Please refer to Figures 1-4The utility model discloses a kind of reduce product gas-solid content DMTO device, including positioning frame 1, the inside fixed connection of positioning frame 1 has reaction kettle 2, the upper surface of reaction kettle 2 is equipped with through-hole 3, the upper surface of reaction kettle 2 is installed with driving motor 4, the output of driving motor 4 is fixedly connected with rotating rod 5, the outer surface of rotating rod 5 is fixedly connected with the stirring rod 6 of equidistance arrangement, the inside of reaction kettle 2 is equipped with cavity 9, the inside of cavity 9 is equipped with heating wire 10, reaction kettle 2 is installed with storage tank 15, the inside of reaction kettle 2 is installed with multistage cyclone 11, the inside of reaction kettle 2 is installed with three-stage cyclone 12, the inside of reaction kettle 2 is installed with four-stage cyclone 13, the inside of reaction kettle 2 is installed with backflush filter 14, cooperation of driving motor 4, rotating rod 5 and stirring rod 6 can be stirred to material, material can be heated by heating wire 10, improve the reaction efficiency of material, cooperation of multistage cyclone 11, three-stage cyclone 12, four-stage cyclone 13 can be recycled to catalyst fine powder, catalyst particulate matter can be intercepted by backflush filter 14, the catalyst fine powder intercepted is backflushed out filter with nitrogen or fuel gas, avoid that the catalyst of smaller particle size cannot be recycled, prevent catalyst from adhering on tower tray and heat exchanger tube bundle, improve the stability of the device operation.

[0025] The bottom end of reaction kettle 2 is fixedly communicated with discharge pipe 7, the outer surface of discharge pipe 7 is equipped with control valve 8, the output end of four-stage cyclone 13 is fixedly communicated with the outer surface of discharge pipe 7, the output end of multistage cyclone 11 is fixedly communicated with the bottom end of storage tank 15, the upper surface of reaction kettle 2 is fixedly communicated with injection pipe 24, the top end of injection pipe 24 is equipped with injection valve 25, cooperation of discharge pipe 7 and control valve 8 facilitates the discharge of material, cooperation of injection valve 25 and injection pipe 24 can facilitate workers to inject chemical material.

[0026] The upper surface of reaction kettle 2 is fixedly communicated with fixed pipe 22, the top end of fixed pipe 22 is equipped with pressure gauge 23, the upper surface of storage tank 15 is fixedly communicated with fixed cylinder 16, the top end of fixed cylinder 16 is equipped with sealing cover 17, the bottom surface of positioning frame 1 is fixedly connected with four support legs 18, the bottom end of each support leg 18 is fixedly connected with anti-skid seat 19, the front surface of positioning frame 1 is fixedly connected with controller 20, the front surface of controller 20 is equipped with display screen 21, cooperation of fixed pipe 22 and pressure gauge 23 can monitor the pressure inside reaction kettle 2, cooperation of controller 20 and display screen 21 facilitates workers to control the device, cooperation of support leg 18 and anti-skid seat 19 can stably place the device, avoid that the device slides.

[0027] The working principle of the utility model is:

[0028] In use, first, the device is connected with the corresponding power supply, then the device is stably placed in the appropriate position by the cooperation of the support leg 18 and the anti-skid seat 19, then the corresponding chemical material is injected into the reaction kettle 2 by the cooperation of the injection valve 25 and the injection pipe 24, then the material is stirred by the cooperation of the driving motor 4, the rotating rod 5 and the stirring rod 6, then the material is heated by the heating wire 10, the reaction efficiency of the material is improved, then the catalyst fine powder is recycled by the cooperation of the multi-stage cyclone separator 11, the three-stage cyclone separator 12 and the four-stage cyclone separator 13, at the same time, the catalyst particles are intercepted by the back-blowing filter 14, the intercepted catalyst fine powder is back-blown out of the filter by nitrogen or fuel gas, the catalyst with small particle size cannot be recycled is avoided, the catalyst adhered to the tower tray and the heat exchanger tube bundle is prevented, and the stability of the device is improved.

[0029] It is apparent for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as illustrative and not restrictive, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended to embrace all changes falling within the meaning and range of equivalents of the elements of the claims. Any reference signs in the claims should not be regarded as limiting the claims to which they belong.

[0030] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A reduced product gas solids content DMTO unit characterized by: The utility model relates to a reaction kettle, including positioning frame (1), the inside fixed connection of positioning frame (1) has reaction kettle (2), the upper surface of reaction kettle (2) is equipped with through -hole (3), the upper surface of reaction kettle (2) is installed drive motor (4), the output of drive motor (4) is fixedly connected with rotary rod (5), the outer surface of rotary rod (5) is fixedly connected with the stirring rod (6) of equidistance arrangement, the inside of reaction kettle (2) is equipped with cavity (9), the inside of cavity (9) is equipped with heating wire (10), the inside of reaction kettle (2) is installed storage tank (15), the inside of reaction kettle (2) is installed multistage cyclone separator (11), the inside of reaction kettle (2) is installed three -stage cyclone separator (12), the inside of reaction kettle (2) is installed four -stage cyclone separator (13), the inside of reaction kettle (2) is installed blowback filter (14).

2. A DMTO unit to reduce product gas solids content according to claim 1, characterized in that: The bottom of reaction kettle (2) is fixedly connected with discharge pipe (7), and the outer surface of discharge pipe (7) is provided with control valve (8).

3. A DMTO unit to reduce product gas solids content according to claim 1, characterized in that: The output end of four -stage cyclone separator (13) is fixedly communicated with the outer surface of discharge pipe (7), and the output end of multistage cyclone separator (11) is fixedly communicated with the bottom of storage tank (15).

4. A DMTO unit to reduce product gas solids content according to claim 1, characterized in that: The upper surface of reaction kettle (2) is fixedly communicated with injection pipe (24), and the top of injection pipe (24) is provided with injection valve (25).

5. A DMTO unit to reduce product gas solids content according to claim 1, characterized by: The upper surface of reaction kettle (2) is fixedly communicated with fixed pipe (22), and the top of fixed pipe (22) is provided with pressure gauge (23).

6. A DMTO unit to reduce product gas solids content according to claim 1, characterized by: The upper surface of storage tank (15) is fixedly communicated with fixed cylinder (16), and the top of fixed cylinder (16) is provided with sealing cover (17).

7. A DMTO unit to reduce product gas solids content according to claim 1, characterized by: The bottom of positioning frame (1) is fixedly connected with four supporting legs (18), and the bottom of each supporting leg (18) is fixedly connected with anti -skid seat (19).

8. A DMTO unit to reduce product gas solids content according to claim 1, characterized by: The front of positioning frame (1) is fixedly connected with controller (20), and the front of controller (20) is provided with display screen (21).

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