Blowing device of air preheater

Abstract

The utility model relates to a blowing device of an air preheater. Comprising a shell; one ends of the multiple blowing pipes penetrate through the side edge of the shell and are installed in the shell at equal intervals, and electromagnetic valves are installed at the other ends of the blowing pipes; the nozzle is communicated with the blowing pipe and is arranged in the shell; and the steam pocket comprises a plurality of independent air chambers which are respectively communicated with the corresponding electromagnetic valves. According to the air preheater, the steam pocket, the electromagnetic valve, the blowing pipe and the nozzle are arranged to communicate, so that steam is sprayed to the heat exchange pipe in the air preheater through the nozzle, dirt on the inner wall of the heat exchange pipe is cleaned in time, the technical problem that in the prior art, inorganic salt adheres to the wall of the heat exchange pipe to affect the heat exchange effect is solved, and the technical effect of providing stable heat exchange performance is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon black preparation equipment, in particular to an air preheater blowing device. Background Art

[0002] Carbon black is a light, loose and extremely fine black powder mainly composed of amorphous carbon with a specific surface area ranging from 10-3000m 2 / g, is the product of incomplete combustion or thermal decomposition of organic matter under insufficient air conditions. Carbon black has a wide range of applications. It can be used as a black dye to make Chinese ink, ink, paint, rubber reinforcing agent, etc. It plays an important role in the industrial field.

[0003] In the carbon black production process, the reactor is the core equipment. The production of different types of carbon black mainly uses reactors of different structural sizes and controls different reaction times. Air and fuel burn in the reactor, and the raw materials are sprayed into the burning flame after atomization, and carbon black is produced through high-temperature pyrolysis. Carbon black is suspended in the combustion gas to form flue gas. After rapid cooling, the flue gas is sent to the air preheater spray device and the oil preheater for further cooling. The flue gas cooled by the air preheater spray device can be cooled by the subsequent heat exchanger and then sent to the bag filter. The separated carbon black is sent to the granulator for granulation, and then dried in the dryer; after fine treatment, it enters the finished product packaging system. It can be seen that the preheater plays an important role in the reactor system of carbon black production.

[0004] Existing air preheater injection devices usually adopt shell and tube air preheater injection devices, which use fresh air as a cooling source and flow through the internal tube bundle. The flue gas flows in the outer shell and transfers the remaining heat to the outer shell, and then enters the tubes in the tube bundle for further heat exchange, and finally transfers the heat to the fresh air flowing through the tube bundle, thereby achieving preheating of the fresh air.

[0005] However, in the process of realizing the technical solution of the utility model in the embodiments of the present application, the inventors of the present application found that the above-mentioned technology has at least the following technical problems: the inorganic salts present in the crude oil and cooling water will adhere to the wall of the heat exchange tube, resulting in the tube wall being rough, and carbon black will clog the tube during the heat exchange process, thereby deteriorating the heat exchange effect. Utility Model Content

[0006] The embodiment of the present application solves the technical problem in the prior art that inorganic salts adhere to the wall of the heat exchange tube and affect the heat exchange effect by providing an air preheater blowing device, thereby achieving the technical effect of providing stable heat exchange performance.

[0007] The embodiment of the present application provides an air preheater blowing device, comprising:

[0008] case;

[0009] A plurality of blowing pipes are provided, one end of each of the blowing pipes passes through the side of the shell and is installed in the shell at the same interval, and a solenoid valve is installed at the other end of each of the blowing pipes;

[0010] A nozzle, the nozzle is connected to the blowing pipe and is disposed in the shell;

[0011] The steam drum comprises a plurality of independent air chambers, and the plurality of air chambers are respectively connected to corresponding solenoid valves.

[0012] In some embodiments, the number of the nozzles on the blowing pipe increases sequentially along the center direction of the shell.

[0013] In some embodiments, a mounting base is further included, wherein the mounting base includes:

[0014] A cylinder body, fixedly arranged inside the shell;

[0015] A positioning tube is installed in the cylinder, and one end of the blowing tube is installed in the positioning tube.

[0016] In some embodiments, the method further includes: a sealing member, wherein the sealing member is sleeved on the blowing pipe and arranged between the shell and the blowing pipe.

[0017] In some embodiments, the blowing pipes are arranged in 7 groups, the number of the nozzles on the blowing pipes located in the middle of the shell is 7, and the number of the nozzles decreases successively along the direction extending outward from the middle of the air preheater.

[0018] In some embodiments, the steam bag and the solenoid valve are connected via a metal hose, and a ball valve is installed between the steam bag and the metal hose.

[0019] In some embodiments, the solenoid valve is a high temperature pulse solenoid valve.

[0020] In some embodiments, the nozzle is a venturi nozzle.

[0021] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: by arranging the steam drum, the solenoid valve, the blowing pipe and the nozzle to be connected, the steam is sprayed toward the heat exchange tubes in the air preheater through the nozzle, and the dirt on the inner wall of the heat exchange tube is cleaned in time, thereby solving the technical problem in the prior art that inorganic salts adhere to the wall of the heat exchange tube and affect the heat exchange effect, and achieving the technical effect of providing stable heat exchange performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The installation diagram of the air preheater blowing device provided in the embodiment of the present application is shown;

[0023] Figure 2A top view of an air preheater blowing device provided in an embodiment of the present application is shown;

[0024] Figure 3 Shows Figure 1 A magnified image of point A;

[0025] In the figure, 100, shell; 200, blowing pipe; 300, solenoid valve; 400, nozzle; 500, steam bag; 600, mounting seat; 610, cylinder; 620, positioning tube; 700, sealing element; 800, metal hose; 900, ball valve. DETAILED DESCRIPTION

[0026] The embodiment of the present application solves the technical problem in the prior art that carbon black clings to the wall and blocks the tube, reducing the heat exchange effect, by providing an air preheater blowing device, thereby achieving a stable heat exchange effect for the air preheater.

[0027] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0028] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] The utility model provides an air preheater blowing device, comprising a preheater body, comprising a shell 100; a blowing pipe 200, which is arranged in plurality, one end of each of the blowing pipes 200 passes through the side of the shell 100 and is installed in the shell 100 at the same interval, and the other end of the blowing pipe 200 is installed with a solenoid valve 300; a nozzle 400, which is connected to the blowing pipe 200 and is placed in the shell 100; and a steam drum 500, which comprises a plurality of independent air chambers, and the plurality of air chambers are respectively connected to corresponding solenoid valves 300.

[0030] The air preheater blowing device provided in the embodiments of the present disclosure is described below in conjunction with the accompanying drawings.

[0031] Figure 1 The installation diagram of the air preheater blowing device provided in the embodiment of the present application is shown; Figure 2 A top view of an air preheater blowing device provided in an embodiment of the present application is shown; Figure 3 Shows Figure 1 Enlarged view of point A.

[0032] like Figure 1-Figure 2 As shown, the air preheater blowing device is installed on the air preheater body, one end of the blowing pipe 200 passes through the side of the shell 100 in parallel and is arranged on the inner wall of the shell 100, the nozzle 400 is connected with the blowing pipe 200 and is arranged toward the air preheater, and the solenoid valve 300 is installed on the other side of the blowing pipe 200 to control the entry of steam in the steam drum 500; the steam drum 500 is divided into a plurality of air chambers, and each air chamber is connected to the corresponding solenoid valve 300.

[0033] The technical solutions in the above embodiments of the present application have at least the following technical effects or advantages:

[0034] By connecting the steam drum 500, the solenoid valve 300, the blowing pipe 200 and the nozzle 400, the steam is sprayed toward the heat exchange tubes in the air preheater through the nozzle 400, and the dirt on the inner wall of the heat exchange tubes is cleaned in time, thereby solving the technical problem in the prior art that inorganic salts adhere to the walls of the heat exchange tubes and affect the heat exchange effect, and achieving the technical effect of providing stable heat exchange performance.

[0035] like Figure 1-Figure 2 As shown, the number of nozzles 400 on a single blowing pipe 200 increases sequentially toward the center of the housing 100 .

[0036] In this embodiment, since there are a large number of heat exchange tubes in the middle of the air preheater, this arrangement can ensure that the heat exchange tubes are fully cleaned, further ensuring the heat exchange effect.

[0037] like Figure 3 As shown, it also includes: a mounting base 600 , which includes: a cylinder 610 fixed inside the shell 100 ; a positioning tube 620 installed in the cylinder 610 , and one end of the blowing tube 200 is installed in the positioning tube 620 .

[0038] In this embodiment, the cylinder 610 is fixed to the inner wall of the shell 100 by welding or gluing, and a positioning tube 620 adapted to the blowing pipe 200 is installed in the cylinder 610 to ensure the stability of the installation of the blowing pipe 200.

[0039] like Figure 1-Figure 2As shown, it also includes: a sealing member 700 , which is sleeved on the blowing pipe 200 and arranged between the housing 100 and the blowing pipe 200 .

[0040] In this embodiment, the seal 700 is a prior art. By providing the seal 700, the sealing performance of the installation of the blowing pipe 200 is ensured, and the possibility of impurities entering and affecting the blowing effect is reduced.

[0041] like Figure 1-Figure 2 As shown, the blowing pipes 200 are arranged in 7 groups, and the number of the nozzles 400 on the blowing pipes 200 located in the middle of the shell 100 is 7. The number of the nozzles 400 decreases successively along the direction extending outward from the middle of the air preheater.

[0042] In this embodiment, the maximum number of nozzles 400 on the blowing pipe 200 and a single blowing pipe 200 is 7, and the number of nozzles 400 decreases in sequence along the direction of the middle blowing pipe 200 extending outward, thereby ensuring the coverage of the blowing area.

[0043] like Figure 1-Figure 2 As shown, the steam drum 500 and the solenoid valve 300 are connected via a metal hose 800 , and a ball valve 900 is installed between the steam drum 500 and the metal hose 800 .

[0044] In this embodiment, the ball valve 900 can control the on / off and flow rate of the steam in the air chamber, thereby ensuring the stability of the steam flow rate flowing into the blowing pipe 200 .

[0045] The solenoid valve 300 is a high temperature pulse solenoid valve 300. The model of the high temperature pulse solenoid valve 300 is DC24V, and the high temperature pulse solenoid valve 300 can achieve the effects of high temperature resistance, corrosion resistance and strong sealing.

[0046] The nozzle 400 is a Venturi nozzle, which can spray gas at high speed and high pressure, thereby ensuring the cleaning effect of the heat exchange tube in the air preheater.

[0047] It should be noted that the components among the various embodiments of the present disclosure can be interchangeable as long as they can play the corresponding roles.

[0048] There are a few points to note:

[0049] (1) Unless otherwise defined, in the embodiments of the present disclosure and the accompanying drawings, the same reference numerals represent the same meanings.

[0050] (2) In the drawings of the embodiments of the present disclosure, only the structures related to the embodiments of the present disclosure are involved, and other structures can refer to the general design.

[0051] (3) For the sake of clarity, parts or regions are enlarged in the drawings used to describe the embodiments of the present disclosure. It is understood that when an element is referred to as being "on" or "under" another element, the element may be "directly" "on" or "under" the other element, or there may be intervening elements.

[0052] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. An air preheater blowing device, characterized in that: include: Housing (100); A plurality of blowing pipes (200) are provided, one end of each of the blowing pipes (200) passes through a side of the housing (100) and is installed in the housing (100) at the same interval, and a solenoid valve (300) is installed at the other end of each of the blowing pipes (200); a nozzle (400), the nozzle (400) being in communication with the blowing pipe (200) and disposed in the housing (100); The steam drum (500) comprises a plurality of independent air chambers, and the plurality of air chambers are respectively connected to corresponding solenoid valves (300).

2. The air preheater spraying device according to claim 1, characterized in that: Along the central direction of the shell (100), the number of the nozzles (400) on the blowing pipe (200) increases sequentially.

3. The air preheater spraying device according to claim 2, characterized in that: Also included is a mounting base (600), wherein the mounting base (600) comprises: A cylinder (610) is fixedly arranged inside the housing (100); A positioning tube (620) is installed in the cylinder (610), and one end of the blowing tube (200) is installed in the positioning tube (620).

4. The air preheater spraying device according to any one of claims 1 to 3, characterized in that: Also includes: A sealing member (700) is sleeved on the blowing pipe (200) and is arranged between the shell (100) and the blowing pipe (200).

5. The air preheater spraying device according to claim 4, characterized in that: The blowing pipes (200) are arranged in 7 groups, the number of the nozzles (400) on the blowing pipes (200) located in the middle of the shell (100) is 7, and the number of the nozzles (400) decreases in sequence along the direction extending outward from the middle of the air preheater.

6. The air preheater spraying device according to claim 5, characterized in that: The steam drum (500) is connected to the solenoid valve (300) via a metal hose (800), and a ball valve (900) is installed between the steam drum (500) and the metal hose (800).

7. The air preheater spraying device according to claim 5 or 6, characterized in that: The solenoid valve (300) is a high-temperature pulse solenoid valve (300).

8. The air preheater spraying device according to claim 7, characterized in that: The nozzle (400) is a Venturi nozzle (400).

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