CN204923970U

CN204923970U - Long service life's coke oven crude gas waste heat recovery heat transfer device

Info

Publication number: CN204923970U
Application number: CN201520484831.0U
Authority: CN
Inventors: 武良辰; 武兆乾
Original assignee: NANJING HUYOU METALLURGY MACHINERY MANUFACTURING CO LTD
Current assignee: NANJING HUYOU METALLURGY MACHINERY MANUFACTURING CO LTD
Priority date: 2015-07-07
Filing date: 2015-07-07
Publication date: 2015-12-30
Anticipated expiration: 2025-07-07

Abstract

The utility model provides a pair of long service life's coke oven crude gas waste heat recovery heat transfer device, include urceolus (1), inner tube (2) and set up coil pipe (3) between urceolus (1) and inner tube (2), coil pipe (3) bottom is equipped with water inlet (4), the top is equipped with delivery port (5), be equipped with between inner tube (2) and coil pipe (3) heat conduction fat (6). The device simple structure, low cost are utilizing simultaneously coke oven high temperature raw coke oven gas waste heat recovery, and the elimination temperature variation prevents to heat exchange coil's harm that the coil pipe from leaking, avoid water to get into the coke oven and lead to the fact the coke oven damage.

Description

A kind of waste heat of coke oven crude gas of long service life reclaims heat-exchanger rig

Technical field

The utility model belongs to field of metallurgical equipment, particularly a kind of raw coke oven gas waste heat recovery heat-exchanger rig being applied to coke oven.

Background technology

Conventional coke oven has the tedge of deriving for raw coke oven gas, and high temperature raw coke oven gas exports in coke oven collecting main by tedge, and the heat that result in coke oven production technology raw coke oven gas is wasted in a large number.

When conventional heat exchanger structure is subject to alternating temperature-changing change in the course of the work, can expand with heat and contract with cold, cause structural deterioration when stress is excessive, occur drainage, usual heat exchanger structure being applied to coke furnace carbonization chamber has very large infringement to furnace wall, affects the coke oven life-span.

In the coking cycles of coke oven, raw gas temperature change reaches more than 400 DEG C, and the structure of ordinary heat exchanger is difficult to stand the stress rupture that this variations in temperature produces.The utility model is arranged between heat exchange coil and inner core has high heat conduction, high temperature resistant, the heat-conducting pad that has certain plasticity, play while heat transfer, absorb the inhomogeneities expansion that raw coke oven gas Periodic Temperature changes inner core and the coil pipe caused, prevent excessive coil pipe and the inner core of causing of stress from destroying.

Utility model content

Utility model object: in order to overcome above-mentioned the deficiencies in the prior art, the purpose of this utility model is that the waste heat of coke oven crude gas providing a kind of long service life reclaims heat-exchanger rig.

Technical scheme: a kind of coil pipe comprising urceolus, inner core and be arranged between urceolus and inner core that the utility model provides; Be provided with water inlet bottom described coil pipe, top is provided with delivery port; The longitudinal section of described coil pipe is semicircle, is provided with thermal grease conduction between the plane at the diameter place of coil pipe and inner core.

As improvement, bottom described urceolus, be provided with drainpipe.

Beneficial effect: the waste heat of coke oven crude gas recovery heat-exchanger rig structure of the long service life that the utility model provides is simple, with low cost, to the heat recovery of coke oven high temperature raw coke oven gas simultaneously, eliminate the infringement of variations in temperature heat exchanging coil pipe, prevent coil pipe from leaking, avoid water to enter coke oven and cause coke oven to damage.

The tedge of coke oven is replaced by heat-exchanger rig of the present utility model, the hydrous water circulatory system, the heat recovery of high temperature raw coke oven gas can be produced steam or hot water, the steam of production or hot water are applied to coke-oven plant again and produce or life, reach the object that heat recovery is energy-conservation.

Accompanying drawing explanation

Fig. 1 is the structural representation of the waste heat of coke oven crude gas recovery heat-exchanger rig of the utility model long service life.

Fig. 2 is the cross-sectional view of the waste heat of coke oven crude gas recovery heat-exchanger rig of the utility model long service life.

Fig. 3 is the partial enlarged drawing of the waste heat of coke oven crude gas recovery heat-exchanger rig of the utility model long service life.

Detailed description of the invention

Below in conjunction with accompanying drawing the utility model made and further illustrating.

The waste heat of coke oven crude gas of long service life reclaims heat-exchanger rig, sees Fig. 1 to 3, the coil pipe 3 comprising urceolus 1, inner core 2 and be arranged between urceolus 1 and inner core 2; Be provided with water inlet 4 bottom described coil pipe 3, top is provided with delivery port 5; The longitudinal section of described coil pipe 3 is semicircle, is provided with thermal grease conduction 6 between the plane at the diameter place of coil pipe 3 and inner core 2.Drainpipe 7 is provided with bottom urceolus 1.

Operation principle is: high temperature raw coke oven gas flows into inner core from heat exchanger bottom, then from inner core outflow heat exchanger; Period, the heat of raw coke oven gas passed to heat exchanger inner core, and the heat of inner core is delivered to outside inner core, then passes to heat conductive pad, and heat conductive pad transfers heat to coil pipe again, and heat is delivered to the water in coil pipe by coil pipe; Water enters coil pipe from heat exchanger bottom, and from heat exchanger top outflow heat exchanger, the water absorbing raw coke oven gas heat isolates steam or direct outer supplying hot water again in gas-liquid separator.

The thermal grease conduction arranged between coil pipe and inner core is the plastic material of high temperature resistant, high heat conduction, plays the gap filled out and rush the semicircular coil pipe of inner core and cross section, reduces thermal resistance, accelerates the heat transfer between inner core and coil pipe; , be not directly rigidly connected between coil pipe and inner core meanwhile, the heat exchanger structure that raw gas temperature cyclically-varying causes inner core to expand to cause can be eliminated and destroy.

Inner core is the inner core that the alloy material of high-temperature-resistant and anti-corrosion obtains, thus can play the effect isolated high temperature raw coke oven gas, prevent high temperature raw coke oven gas corrosion heat exchange coil.

Heat conductive pad is high temperature resistant, high heat conduction, has the heat conductive pad of certain plastic material, thus can play the inhomogeneities expansion that absorption raw coke oven gas Periodic Temperature changes inner core and the coil pipe caused.Arrange between heat exchange coil and inner core and there is high heat conduction, high temperature resistant, the heat conductive pad that has certain plasticity, play while heat transfer, absorb the inhomogeneities expansion that raw coke oven gas Periodic Temperature changes inner core and the coil pipe caused, prevent excessive coil pipe and the inner core of causing of stress from destroying, avoiding leaking enters coke oven and causes coke oven to damage.

Claims

1. the waste heat of coke oven crude gas of long service life reclaims a heat-exchanger rig, it is characterized in that: the coil pipe (3) comprising urceolus (1), inner core (2) and be arranged between urceolus (1) and inner core (2); Described coil pipe (3) bottom is provided with water inlet (4), top is provided with delivery port (5); The longitudinal section of described coil pipe (3) is semicircle, is provided with thermal grease conduction (6) between the plane at the diameter place of coil pipe (3) and inner core (2).

2. the waste heat of coke oven crude gas of a kind of long service life according to claim 1 reclaims heat-exchanger rig, it is characterized in that: described urceolus (1) bottom is provided with drainpipe (7).