Resistance reduction connecting structure for TTF decomposing furnace and C5 cyclone

Abstract

The utility model discloses a TTF decomposing furnace and C5 cyclone barrel resistance reduction connecting structure which comprises a discharging gooseneck pipe of a TTF decomposing furnace, C5 cyclone barrels are symmetrically arranged at the position of a discharging opening in the lower end of the gooseneck pipe of the TTF decomposing furnace, a connecting air pipe is arranged between a volute body feeding inlet of each C5 cyclone barrel and the discharging opening in the lower end of the gooseneck pipe, and the C5 cyclone barrels are connected with the discharging opening in the lower end of the gooseneck pipe. The utility model relates to the technical field of resistance reduction technical transformation of preheater feed ports in cement industrial production, an original horizontal connecting section is omitted, materials cannot be accumulated in a connecting pipeline of a decomposing furnace outlet and a C5 cyclone, the ventilation area at the joint of the decomposing furnace outlet and the C5 cyclone is increased, and the C5 cyclone is prevented from being blocked. The ventilation resistance is effectively reduced, the system operation resistance of the rotary kiln system is reduced, the clinker yield can be greatly improved, the ventilation area of the air inlet is effectively increased, and meanwhile the problems of material accumulation and material collapse of the flat pipe of the air inlet and the slope of the air inlet are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of resistance reduction technology transformation of a preheater feed port in cement industry production, in particular to a resistance reduction connection structure of a TTF decomposition furnace and a C5 cyclone. Background Art

[0002] With the country's emphasis on production capacity control and environmental protection, energy conservation and consumption reduction are important goals pursued in the field of new dry cement production technology; reducing the resistance of the kiln tail preheater system and reducing the operating load of the high-temperature fan can effectively reduce its power consumption, and at the same time is beneficial to system ventilation and capacity tapping. The resistance of the kiln tail preheater mainly comes from the preheater and the cyclone, so reducing the resistance of the decomposition furnace and coordinating with the partial transformation of the smoke chamber can achieve resistance reduction and energy saving.

[0003] In the current cement production line technology, the commonly used resistance reduction measures include further expanding the inlet area, reducing the ineffective travel from the decomposition furnace to the cyclone, reducing or avoiding the collision of the inlet airflow and the reflux, reducing unnecessary gas disturbance and material accumulation. However, looking at the development of contemporary preheater technology, resistance reduction has basically sacrificed thermal efficiency, which is intuitively manifested in reduced separation efficiency, increased heat consumption, increased investment costs, easy wear of parts, and shortened life of the preheater decomposition furnace and cyclone, resulting in a series of technical problems, as shown in the attached description of this application. Figure 3 As shown, in the prior art, there is a 1500mm flat pipe at the bottom of the pipe slope where the TTF decomposition furnace outlet is connected with the five-stage cyclone. During normal production, materials are prone to accumulation at the flat pipe position where the decomposition furnace outlet is connected with the C5 cyclone. The accumulated materials are generally shot into the C5 cyclone through an air cannon and directly enter the C5 discharge pipe, which has a great impact on the kiln return condition, clinker quality, and safe production. The accumulated materials also cause the ventilation area here to decrease and the system resistance to increase. In view of this, in-depth research was conducted on the above-mentioned problems, resulting in this case. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a resistance-reducing connection structure between a TTF decomposition furnace and a C5 cyclone, which solves the problems raised in the background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a resistance-reducing connection structure between a TTF decomposition furnace and a C5 cyclone, including a discharge gooseneck of the TTF decomposition furnace, a C5 cyclone symmetrically arranged at the discharge port at the lower end of the gooseneck of the TTF decomposition furnace, a connecting air duct is arranged between the volute body feed inlet of the C5 cyclone and the discharge port at the lower end of the gooseneck, the bottom of the connecting air duct is a three-stage material guide slope, and the bottom end of the three-stage material guide slope is connected to the side wall of the volute body feed port.

[0006] The above-mentioned C5 cyclone cylinder includes a column arranged at the lower part of the volute casing, the bottom of the column is connected to an upper cone and a lower cone, and an inner cylinder is installed at the position of the volute casing.

[0007] The above-mentioned three-level material guide slope is constructed by casting heat-resistant steel anchors and silicon carbide anti-scaling castables.

[0008] The three-stage material guiding slope is symmetrically arranged with an isosceles angle structure.

[0009] The utility model provides a resistance reduction connection structure between a TTF decomposition furnace and a C5 cyclone. The utility model has the following beneficial effects: the resistance reduction connection structure between the TTF decomposition furnace and the C5 cyclone implements a resistance reduction scheme for the air inlet of the TTF decomposition furnace into the C5 cyclone to reduce system resistance, cancels the original horizontal connection section, and materials will not accumulate in the pipe connecting the decomposition furnace outlet and the C5 cyclone, increasing the ventilation area at the connection between the decomposition furnace outlet and the C5 cyclone, effectively reducing ventilation resistance, and reducing system operation resistance in the rotary kiln system. The clinker output can be greatly improved, effectively increasing the ventilation area of ​​the air inlet, and solving the problems of material accumulation and collapse in the flat pipe and slope of the air inlet, which is beneficial to improving material separation efficiency and reducing cyclone resistance; the three-level material guide slope adopts an isosceles angle structure, and the connection between the TTF decomposition furnace and the C5 inlet can effectively prevent the occurrence of slope material accumulation and reduce the interference of collapsed materials on the air flow in the cyclone; the inlet area is larger, the wind speed is lower, the eddy resistance in the inlet area is reduced, and the wind loss is smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the main structure of the TTF decomposition furnace and the C5 cyclone resistance reduction connection structure described in the utility model.

[0011] Figure 2 For this utility model Figure 1 Schematic diagram of the local enlarged structure at position a.

[0012] Figure 3 It is a structural schematic diagram of the connection position between the TTF decomposition furnace and the C5 cyclone in the prior art.

[0013] In the figure: 1, TTF decomposition furnace; 2, gooseneck; 3, C5 cyclone; 4, three-stage material guide slope; 5, horizontal connecting section; 301, volute casing; 302, column; 303, upper cone; 304, lower cone; 305, inner cylinder. DETAILED DESCRIPTION

[0014] 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 in 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.

[0015] Embodiment: In conjunction with the specification Figure 1-2It can be seen that the present application specifically designs a resistance reduction connection structure between a TTF decomposition furnace 1 and a C5 cyclone 3, wherein a C5 cyclone 3 is symmetrically arranged at the discharge port position at the lower end of the gooseneck tube 2 of the TTF decomposition furnace 1, and a connecting air duct is arranged between the feed inlet of the volute casing 301 of the C5 cyclone 3 and the discharge port at the lower end of the gooseneck tube 2, and the bottom of the connecting air duct is a three-stage material guide slope 4, and the bottom end of the three-stage material guide slope 4 is connected to the side wall of the feed port of the volute casing 301, wherein the C5 cyclone 3 includes a column 302 arranged at the lower part of the volute casing 301, and the bottom of the column 302 is connected to an upper cone 303 and a lower cone 304, and the volute casing 30 1 is installed with an inner cylinder 305; the three-stage material guide slope 4 is composed of heat-resistant steel anchors and silicon carbide anti-crusting castables; the three-stage material guide slope 4 is symmetrically arranged with an isosceles angle structure. When the airflow carries the powder into the cyclone, it is forced to rotate in the annular space between the cyclone body and the inner cylinder 305, and moves downward while rotating. The downward rotating movement in the cyclone becomes an outer vortex, which extends from the cyclone to the cone and can extend to the end of the cone, and then rotates upward and rises. The fluid rotating upward becomes an inner vortex; because the material density is greater than the gas temperature, the material moves to the edge under the action of centrifugal force. The velocity is much greater than that of the gas, resulting in an increase in concentration near the side wall. At the same time, due to the viscous resistance, the fluid velocity at the side wall is reduced, which greatly reduces the suspension resistance, and the material settles to separate the gas, and the material enters the discharge pipe; wherein the column 302 is a cylindrical hollow shell, and the upper vertebral body and the lower vertebral body are connected in sequence below the column 302; the outlet of the lower cone 304 is the discharge port, and the TTF decomposition furnace 1 and the C5 cyclone 3 resistance reduction connection structure, in order to reduce the system resistance, a resistance reduction scheme is implemented for the air inlet of the TTF decomposition furnace 1 entering the C5 cyclone 3, and the original horizontal connection section 5 is cancelled, and the material will not pile up in the pipe connecting the decomposition furnace outlet and the C5 cyclone 3. The ventilation area at the connection between the decomposition furnace outlet and the C5 cyclone 3 is increased, and the ventilation resistance is effectively reduced. The rotary kiln system reduces the system operation resistance, and the clinker output can be greatly increased, which effectively increases the ventilation area of ​​the air inlet. At the same time, it solves the problems of material accumulation and collapse in the flat pipe and slope of the air inlet, which is beneficial to the improvement of material separation efficiency and the reduction of cyclone resistance; the three-stage material guide slope 4 adopts an isosceles angle structure, and the connection between the TTF decomposition furnace 1 and the C5 inlet can effectively prevent the occurrence of slope material accumulation and reduce the interference of collapsed materials on the air flow in the cyclone; the inlet area is larger and the wind speed is lower, which reduces the eddy resistance in the inlet area and the wind loss is smaller.

[0016] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. TTF decomposition furnace and C5 cyclone resistance reduction connection structure, characterized in that: It includes a discharge gooseneck of a TTF decomposition furnace, wherein a C5 cyclone is symmetrically arranged at the discharge port at the lower end of the gooseneck of the TTF decomposition furnace, and a connecting air duct is arranged between the volute body feed inlet of the C5 cyclone and the discharge port at the lower end of the gooseneck, wherein the bottom of the connecting air duct is a three-stage material guide slope, and the bottom end of the three-stage material guide slope is connected to the side wall of the volute body feed port.

2. The TTF decomposition furnace and C5 cyclone resistance reduction connection structure according to claim 1 is characterized in that: The C5 cyclone cylinder includes a column arranged at the lower part of the volute casing, an upper cone and a lower cone are connected to the bottom of the column, and an inner cylinder is installed at the position of the volute casing.

3. The TTF decomposition furnace and C5 cyclone resistance reduction connection structure according to claim 1 is characterized in that: The three-stage material guide slope is formed by casting heat-resistant steel anchors and silicon carbide anti-scaling castable material.

4. The TTF decomposition furnace and C5 cyclone resistance reduction connection structure according to claim 1 is characterized in that: The three-stage material guiding slope is symmetrically arranged with an isosceles angle structure.

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