CN209778744U - A Vertical Furnace with Double Regenerator Structure - Google Patents

Abstract

The utility model relates to a vertical furnace with a double-regenerator structure, which comprises a combustion chamber-carbonization chamber unit and a regenerator unit, wherein the combustion chamber-carbonization chamber unit is composed of combustion chambers and carbonization chambers which are alternately arranged, and the combustion chamber is composed of an upper joining flue, a vertical flame path and a lower joining flue; the heat accumulation chamber unit comprises a heat accumulation chamber A and a heat accumulation chamber B, the heat accumulation chamber A and the heat accumulation chamber B are respectively arranged at two sides of the combustion chamber-carbonization chamber unit, the heat accumulation chamber A and the heat accumulation chamber B are both composed of an upper heat accumulation chamber and a lower heat accumulation chamber, and the centers of an upper converging flue and a lower converging flue are respectively provided with a partition wall; the upper converging flues on two sides of the partition wall are respectively communicated with the upper heat storage chamber of the heat storage chamber A or the heat storage chamber B, and the lower converging flues on two sides of the partition wall are respectively communicated with the lower heat storage chamber of the heat storage chamber A or the heat storage chamber B. The heat storage chambers are respectively arranged on the two sides of the vertical furnace, so that the raw coke oven gas can be prevented from leaking, and the environmental pollution is reduced; can also improve the heating uniformity of the furnace body and improve the productivity and the investment cost ratio.

Description

A Vertical Furnace with Double Regenerator Structure

technical field

The utility model relates to a furnace body structure of an upright furnace, in particular to an upright furnace with double regenerator structure for dry distillation of low-rank coal.

Background technique

Vertical furnaces for low-rank coal carbonization were widely used in the production of city gas and semi-coke in the 1970s and 1980s. In recent years, with the development and utilization of low-quality lignite and a large amount of pulverized coal that need to be upgraded and used efficiently, vertical furnace technology as a medium-low temperature dry distillation is often used to produce semi-coke and gas, and extract coal tar from them, and then After deep processing to achieve the purpose of efficient utilization.

At present, the furnace body structure of the externally heated vertical furnace is composed of a carbonization chamber, a combustion chamber and a regenerator, as shown in Fig. 1 and Fig. The sealing wall 4 and the regenerator 1 occupy the other side of the furnace body. The carbonization chamber 3 and the combustion chamber 2 are alternately arranged, and the carbonization chamber 3 between two adjacent combustion chambers 2 is divided into two groups; the regenerator 1 is composed of upper and lower regenerators 11, 12. One end of the heat chamber 1 communicates with the combustion chamber 2, and the other end is connected with the exhaust gas switch. In the actual production process, there are two problems in the vertical furnace with this structure. Firstly, because the carbonization chamber is a positive pressure system, the dry distillation of coal in the carbonization chamber produces raw coal gas, which will leak into the atmosphere through the sealing wall of the carbonization chamber and pollute the environment; secondly, due to the limitation of the uniformity of heating in the longitudinal direction, The length of the carbonization chamber cannot be increased, which will affect the production capacity. In the context of increasingly stringent national environmental protection policies, in order to expand the development and utilization of low-rank coal, it is necessary to innovate the structure of the vertical furnace to improve heating uniformity and reduce environmental pollution, thereby meeting environmental protection requirements.

Contents of the invention

The utility model provides an upright furnace with a double regenerator structure. Regenerators are respectively arranged on both sides of the upright furnace, which can not only prevent the leakage of raw gas and reduce environmental pollution, but also improve the uniform heating of the furnace body. performance, improve production capacity and cost-effectiveness of investment.

In order to achieve the above object, the utility model adopts the following technical solutions to realize:

A vertical furnace with a double regenerator structure, including a combustion chamber-carbonization chamber unit and a regenerator unit. The combustion chamber-carbonization chamber unit is composed of combustion chambers and carbonization chambers arranged alternately, wherein the combustion chamber consists of an upper confluent flue, It is composed of a vertical flue and a lower confluent flue; the regenerator unit includes a regenerator A and a regenerator B, and the regenerator A and the regenerator B are respectively arranged on both sides of the combustion chamber-carbonization chamber unit, and the regenerator Both the heat chamber A and the regenerator B are composed of an upper regenerator and a lower regenerator, and the centers of the upper converging flue and the lower converging flue are respectively provided with partition walls; the upper converging flue on both sides of the partition The flues are respectively connected with the upper regenerator of the regenerator A or regenerator B on the corresponding side, and the lower converging flues on both sides of the partition wall are respectively connected with the lower regenerator of the regenerator A or regenerator B on the corresponding side. Hot cell connected.

The top of the upper regenerator is provided with a small flue in the upper part of the upper regenerator, and the bottom is provided with a small flue in the lower part of the upper regenerator; the top of the lower regenerator is provided with a small flue in the upper part of the regenerator, and the bottom is provided with a heat storage The small flue in the lower part of the chamber; the small flue in the upper part of the upper regenerator is connected with the upper converging flue on the corresponding side; the small flue in the lower part of the lower regenerator is connected with the lower converging flue in the corresponding side; The ends of the flue and the upper small flue of the lower regenerator away from the combustion chamber are respectively connected to the waste gas switch.

Both the upper regenerator chamber and the lower regenerator chamber are filled with checker bricks.

Compared with the prior art, the beneficial effects of the utility model are:

Regenerators are installed on both sides of the vertical furnace, which can not only prevent the leakage of raw gas and reduce environmental pollution, but also improve the heating uniformity of the furnace body, improve production capacity and cost-effectiveness of investment.

Description of drawings

Fig. 1 is a sectional view of the regenerator-combustion chamber of a conventional externally heated vertical furnace.

Fig. 2 is a view of A-A in Fig. 1 .

Fig. 3 is a cross-sectional view of a regenerator-combustion chamber of a vertical furnace with a double regenerator structure according to the utility model.

Fig. 4 is a B-B view in Fig. 3 .

In the figure: 1. Regenerator 1a. Regenerator A 1b. Regenerator B 11. Upper regenerator 12. Lower regenerator 2. Combustion chamber 21. Upper confluence flue 22. Standing fire passage 23. Lower part Converging flue 3. Carbonization chamber 4. Sealing wall 5. Partition wall 6. Exhaust gas switch

Detailed ways

The specific embodiment of the utility model will be further described below in conjunction with accompanying drawing:

As shown in Figure 3 and Figure 4, a vertical furnace with double regenerator structure described in the utility model includes a combustion chamber-carbonization chamber unit and a regenerator unit, and the combustion chamber-carbonization chamber unit consists of combustion chamber 2 and The carbonization chamber 3 is arranged alternately, wherein the combustion chamber 2 is composed of the upper converging flue 21, the vertical fire passage 22 and the lower converging flue 23; the regenerator unit includes a regenerator A1a and a regenerator B1b, and The chamber A 1a and the regenerator B 1b are respectively arranged on both sides of the combustion chamber-carbonization chamber unit, the regenerator A1a and the regenerator B 1b are both composed of an upper regenerator 11 and a lower regenerator 12, the upper Partition walls 5 are respectively arranged at the centers of the converging flue 21 and the lower converging flue 23; The upper heat storage chamber 11 communicates, and the lower confluent flues 23 on both sides of the partition wall 5 communicate with the lower heat storage chamber 12 of the heat storage chamber A1a or the heat storage chamber B1b on the corresponding side respectively.

The top of the upper regenerator 11 is provided with a small flue in the upper part of the regenerator, and the bottom is provided with a small flue in the lower part of the upper regenerator; the top of the lower regenerator 12 is provided with a small flue in the upper part of the regenerator, and the bottom is provided with a small The small flue at the lower part of the regenerator; the small flue at the upper part of the upper regenerator communicates with the upper converging flue 21 on the corresponding side, and the small flue at the lower part of the lower regenerator communicates with the lower converging flue 23 on the corresponding side; The ends of the small flue in the lower part of the heat chamber and the small flue in the upper part of the lower regenerator away from the combustion chamber 2 are respectively connected to the waste gas switch 6 .

Both the upper regenerator chamber 11 and the lower regenerator chamber 12 are filled with checker bricks.

As shown in Figure 1, the gas flow in a conventional externally heated vertical furnace is as shown in the figure. The airflow entering from the lower regenerator 12 passes through the lower part of the combustion chamber 2 and merges with the flue 23, and enters the vertical fire passage of the combustion chamber 2. 22, the exhaust gas after combustion is discharged through the upper regenerator 11 through the upper confluence flue 21. The exchanged gas flows in the opposite direction.

As shown in Figure 3, the gas flow direction of a vertical furnace with double regenerator structure described in the utility model is as shown in the figure, from the regenerator A 1a and the regenerator B on both sides of the combustion chamber-carbonization chamber unit The two airflows entering the two lower regenerators 12 corresponding to 1b respectively pass through the lower converging flue 23 of the corresponding side and enter the vertical fire channel 22 of the corresponding side combustion chamber 2 for combustion, and the exhaust gas after combustion passes through the corresponding side combustion chamber 2 The upper confluent flue 21 is discharged through the two upper regenerators 11 of the corresponding side regenerator A 1a and regenerator B 1b respectively. The exchanged gas flows in the opposite direction.

The partition wall 5 is used to separate the two airflows coming from the regenerator A 1a and the regenerator B 1b on both sides, so that they can enter the vertical fire channel 22 of the corresponding side combustion chamber 2 for combustion. This design It is beneficial to increase the heating uniformity in the longitudinal direction and the height direction of the vertical furnace, reduce energy consumption, and increase energy utilization efficiency. It is also possible to further increase the length of the combustion chamber-coking chamber unit, which is conducive to the development of the vertical furnace in the direction of large-scale.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto. The equivalent replacement or change of the new technical solution and the concept of the utility model shall be covered by the protection scope of the utility model.

Claims (3)

1. A vertical furnace with a double regenerator structure, including a combustion chamber-carbonization chamber unit and a regenerator unit, the combustion chamber-carbonization chamber unit is composed of combustion chambers and carbonization chambers arranged alternately, wherein the combustion chamber is composed of upper confluent smoke It is composed of a flue, a vertical flue and a lower converging flue; it is characterized in that the regenerator unit includes a regenerator A and a regenerator B, and the regenerator A and the regenerator B are respectively arranged in the combustion chamber-carbonization chamber On both sides of the unit, the regenerator A and the regenerator B are composed of an upper regenerator and a lower regenerator, and the centers of the upper converging flue and the lower converging flue are respectively provided with partition walls; The upper converging flues on both sides communicate with the regenerator A or the upper regenerator of the regenerator B on the corresponding side respectively, and the lower converging flues on both sides of the partition wall respectively communicate with the regenerator A or the regenerator on the corresponding side. The lower heat storage chamber of heat chamber B is connected. 2. A vertical furnace with double regenerator structure according to claim 1, characterized in that the top of the upper regenerator is provided with a small flue at the upper part of the regenerator, and the bottom is provided with a lower part of the regenerator Small flue; the upper small flue of the lower regenerator is set on the top of the lower regenerator, and the lower small flue of the lower regenerator is set at the bottom; the upper small flue of the upper regenerator communicates with the upper converging flue on the corresponding side, The small flue at the lower part of the lower regenerator communicates with the lower converging flue at the corresponding side; the small flue at the lower part of the upper regenerator and the upper end of the small flue at the lower regenerator away from the combustion chamber are respectively connected to the waste gas switch. 3. A vertical furnace with double regenerator structure according to claim 1, characterized in that, both the upper regenerator chamber and the lower regenerator chamber are filled with checker bricks.