CN217838804U

CN217838804U - Coke oven branch flue waste heat recovery device

Info

Publication number: CN217838804U
Application number: CN202222025472.5U
Authority: CN
Inventors: 安丰森; 王文娟; 付春艳; 李长君
Original assignee: HEILONGJIANG JIANLONG CHEMICAL CO Ltd
Current assignee: HEILONGJIANG JIANLONG CHEMICAL CO Ltd
Priority date: 2022-08-03
Filing date: 2022-08-03
Publication date: 2022-11-18
Anticipated expiration: 2032-08-03

Abstract

The utility model belongs to the technical field of steel production equipment, in particular to a coke oven branch flue waste heat recovery device, which comprises a pre-buried high temperature resistant bracket, a U-shaped heat exchange tube, a steam outlet tube, a pressure gauge, a water inlet tube, a thermometer, a control valve, a steam manifold and a water inlet manifold; the U-shaped heat exchange tube is arranged at the upper part of the sub-flue and supported by two pre-embedded high-temperature resistant brackets, and the pre-embedded high-temperature resistant brackets are pre-embedded in the brick laying layer and the concrete wall; one end of the water inlet pipe and one end of the steam outlet pipe are respectively connected with the inlet and the outlet of the U-shaped heat exchange pipe through flanges, and the other ends of the water inlet pipe and the steam outlet pipe are respectively communicated with the water inlet manifold and the steam manifold; a pressure gauge, a thermometer and a control valve are installed on the steam outlet pipe, and a pressure gauge and a control valve are installed on the water inlet pipe; the U-shaped heat exchange tube is arched. The device directly carries out heat recovery on dividing the flue, and the heat loss value is little, and heat recovery rate is big, and the small investment, directly incorporates into the steam pipe network after retrieving, and is energy-concerving and environment-protective, economical and applicable.

Description

Coke oven branch flue waste heat recovery device

Technical Field

The utility model belongs to the technical field of steel production equipment, concretely relates to coke oven divides flue waste heat recovery device.

Background

The coke oven branch flue is longer and has high flue gas temperature, in the prior art, flue gas waste heat is obtained by leading a branch pipe out of the flue before a turning plate is arranged at the main flue, and actually, the heat loss value from the branch flue to the turning plate of the main flue is larger. At present, a device for recovering waste heat of a split flue does not exist, and energy is wasted.

SUMMERY OF THE UTILITY MODEL

In order to recover the waste heat on the branch flue, the utility model provides a coke oven branch flue waste heat recovery device. The device directly carries out heat recovery on dividing the flue, and the heat loss value is little, and heat recovery rate is big, and the small investment, directly incorporates into the steam pipe network after retrieving, and is energy-concerving and environment-protective, economical and applicable.

The utility model discloses a technical scheme do: a coke oven smoke-separating channel waste heat recovery device comprises a pre-buried high-temperature-resistant bracket, a U-shaped heat exchange tube, a steam outlet tube, a pressure gauge, a water inlet tube, a thermometer, a control valve, a steam manifold and a water inlet manifold; the U-shaped heat exchange tube is arranged at the upper part of the sub-flue and supported by two pre-embedded high-temperature-resistant brackets, and the pre-embedded high-temperature-resistant brackets are pre-embedded in the brick laying layer and the concrete wall; one end of the water inlet pipe and one end of the steam outlet pipe are respectively connected with the inlet and the outlet of the U-shaped heat exchange pipe through flanges, and the other ends of the water inlet pipe and the steam outlet pipe are respectively communicated with the water inlet manifold and the steam manifold; the steam outlet pipe is provided with a pressure gauge, a temperature gauge and a control valve, and the water inlet pipe is provided with a pressure gauge and a control valve; the U-shaped heat exchange tube is arched.

Further, the number of the U-shaped heat exchange tubes is at least 3.

Furthermore, the water inlet manifold and the steam manifold are arranged on a pipeline support, and the pipeline support is pre-buried and fixed on the outer wall of the concrete wall.

This neotype beneficial effect: provides a coke oven branch flue waste heat recovery device. The device directly recovers heat on the sub-flue, and has small heat loss value and large heat recovery rate; the structural form of the sub-flues is fully utilized for combined design, and other spaces are not occupied; the steam generated by waste heat recovery is directly merged into a steam pipe network, equipment such as a fan and infrastructure do not need to be installed, the investment of equipment and the like is saved, the power consumption is saved, and the steam pipe network is energy-saving, environment-friendly, economical and applicable.

Drawings

Fig. 1 is a schematic structural diagram of the first embodiment.

Detailed Description

Example one

Referring to fig. 1, the coke oven branch flue waste heat recovery device comprises a pre-buried high temperature resistant bracket 4, a U-shaped heat exchange tube 5, a steam outlet tube 6, a pressure gauge 7, a water inlet tube 8, a thermometer 9, a control valve 10, a steam manifold 11 and a water inlet manifold 12; the U-shaped heat exchange tube 5 is arranged at the upper part of the sub-flue 1, the U-shaped heat exchange tube 5 is supported by two pre-buried high-temperature-resistant brackets 4, and the pre-buried high-temperature-resistant brackets 4 are pre-buried in the bricklaying layer 2 and the concrete wall 3; one end of the water inlet pipe 8 and one end of the steam outlet pipe 6 are respectively connected with the inlet and the outlet of the U-shaped heat exchange pipe 5 through flanges, and the other ends of the water inlet pipe 8 and the steam outlet pipe 6 are respectively communicated with a water inlet manifold 12 and a steam manifold 11; the steam outlet pipe 6 is provided with a pressure gauge 7, a thermometer 9 and a control valve 10, and the water inlet pipe 8 is provided with the pressure gauge 7 and the control valve 10; the U-shaped heat exchange tube 5 is arched; the number of the U-shaped heat exchange tubes 5 is 5; the water inlet manifold 12 and the steam manifold 11 are arranged on the pipeline bracket 13, and the pipeline bracket 13 is pre-buried and fixed on the outer wall of the concrete wall 3.

When a coke oven branch flue is built, a reserved U-shaped heat exchange tube opening is reserved between two waste gas tubes at a coke oven concrete wall and a refractory material layer, and the size of the reserved U-shaped heat exchange tube opening is determined according to the type of the U-shaped tube; when concrete is poured through the clay bricks in the inner layer of the flue, a plurality of high-temperature-resistant brackets are embedded along with the arch; prefabricating a high-temperature resistant U-shaped heat exchange tube according to the arch of the clay brick at the inner layer of the smoke separating channel; one end of the U-shaped pipe is a demineralized water inlet, and the other end of the U-shaped pipe is a steam outlet, and the U-shaped pipe is connected with the water inlet pipe and the steam outlet pipe respectively through flanges. The water inlet pipe and the steam outlet pipe of each group of U-shaped heat exchange pipes are communicated with the water inlet manifold and the steam manifold. The demineralized water in the water inlet manifold enters the U-shaped heat exchange pipe through the water inlet pipe to exchange heat with the high-temperature flue gas in the branch flue, and the demineralized water directly enters the steam pipe network through the steam manifold pipeline after producing steam. In the production and use process, if the U-shaped pipe is damaged, the U-shaped heat exchange pipe can be replaced through the reserved opening.

Claims

1. The utility model provides a coke oven divides flue waste heat recovery device which characterized in that: the waste heat recovery device comprises a pre-buried high-temperature-resistant bracket (4), a U-shaped heat exchange tube (5), a steam outlet tube (6), a pressure gauge (7), a water inlet tube (8), a thermometer (9), a control valve (10), a steam manifold (11) and a water inlet manifold (12); the U-shaped heat exchange tube (5) is arranged at the upper part of the sub-flue (1), the U-shaped heat exchange tube (5) is supported by two pre-buried high-temperature-resistant brackets (4), and the pre-buried high-temperature-resistant brackets (4) are pre-buried in the brick laying layer (2) and the concrete wall (3); one end of the water inlet pipe (8) and one end of the steam outlet pipe (6) are respectively connected with the inlet and the outlet of the U-shaped heat exchange pipe (5) through flanges, and the other ends of the water inlet pipe and the steam outlet pipe are respectively communicated with the water inlet manifold (12) and the steam manifold (11); a pressure gauge (7), a thermometer (9) and a control valve (10) are installed on the steam outlet pipe (6), and the pressure gauge (7) and the control valve (10) are installed on the water inlet pipe (8); the U-shaped heat exchange tube (5) is arched.

2. The coke oven branch flue waste heat recovery device of claim 1, wherein: the number of the U-shaped heat exchange tubes (5) is at least 3.

3. The coke oven branch flue waste heat recovery device of claim 1 or 2, characterized in that: the water inlet manifold (12) and the steam manifold (11) are arranged on the pipeline bracket (13), and the pipeline bracket (13) is pre-buried and fixed on the outer wall of the concrete wall (3).