CN2360794Y

CN2360794Y - Horizontal gas dual-layer coiled pipe boiler

Info

Publication number: CN2360794Y
Application number: CN 98250160
Authority: CN
Inventors: 宋伯民
Original assignee: Youjian Boiler Vessel Plant Youjian Co Zhundong Prospecting Development Co
Current assignee: Youjian Boiler Vessel Plant Youjian Co Zhundong Prospecting Development Co
Priority date: 1998-12-09
Filing date: 1998-12-09
Publication date: 2000-01-26
Anticipated expiration: 2008-12-09

Abstract

The utility model relates to a horizontal type gas furnace with double layers of pipe coils. Two layers of pipe coils with different diameters are arranged in a cylindrical furnace body along an axis and are connected in series, and a cylindrical isolating layer is arranged between an inner pipe coil and an outer pipe coil. An isolation layer which divides an annular cavity into an upper part and a lower part is arranged along a horizontal axis in the annular cavity which is formed between the inner wall of the furnace body and the outer wall of the outer pipe coil. A preheating flue pipe is a closed type preheating flue with low inside and high outside, the closed type preheating flue is arranged on an axis position above a radius of the wall of a back furnace chamber, and the flue pipe passing through the end of the preheating flue is not communicated with the end of the preheating flue. A relatively burning type gas nozzle is composed of an annular fire dividing pipe and flaming nozzles which are uniformly distributed on the annular fire dividing pipe and are inclined towards an axial of the annular fire dividing pipe. The utility model has the advantages of high heat exchanging efficiency and good heating effect.

Description

Horizontal combustion gas dual layer discs pipe furnace

The utility model relates to a kind of fuel-displaced process of the oil well coil pipe stove of heating in crude oil for the first time, particularly a kind of horizontal combustion gas dual layer discs pipe furnace of being used for.

Now the widely used coil pipe stove that is used for heating in crude oil on the oil well mostly is vertical single-layered disk pipe furnace, and its gas nozzle is the semicircle pipe, is drilled with several circular holes on it, and natural gas sprays burning from circular hole.The coil pipe stove of this structure does not have convection heating surface, and heat is washed away the distance weak point, and waste heat directly discharges out of the furnace through chimney, and the heating crude oil effect is bad, and the thermal efficiency is low, and the reaction in furnace temperature is low, and the natural gas burn-off rate is also lower, wastes energy.

The purpose of this utility model provides a kind of heat exchange distance, reaction temperature height, thermal efficiency height, the horizontal combustion gas dual layer discs pipe furnace that the gas utilization rate is high.

The purpose of this utility model is achieved in that a kind of horizontal combustion gas dual layer discs pipe furnace, comprises cylindrical furnace, cylindrical burner hearth, duplex coil, preheating chimney, to combustion formula gas nozzle etc.; Wherein in the cylindrical furnace along axis be provided with the different inner coil pipe of the diameter of two-layer mutual series connection and outside coil pipe, inner coil pipe and outside the cylindrical shape separation layer that one deck is made with refractory material is being set between the coil pipe, this separation layer is connected with the front furnace wall is closed fully, be connected with rear hearth wall Lower Half is closed, the first half leaves a slit; The inwall of cylindrical furnace and outside be provided with along horizontal axis in the toroidal cavity that forms between the coil pipe outer wall toroidal cavity be separated into two-part separation layer up and down, this separation layer is connected with the rear hearth wall is closed fully, and leave passage between the front furnace wall, on the rear hearth wall of the Lower Half of toroidal cavity, have outlet flue; The preheating chimney be one from the above axis of rear hearth wall radius position be provided with one in low outside high closed pre-heating flue, chimney passes the end of this closed pre-heating flue, and be not connected with closed pre-heating flue, the outer setting of chimney and closed pre-heating flue has insulation layer; To combustion formula gas nozzle is by the U-shaped economizer bank, and the annular that is connected U-shaped economizer bank end is divided fire tube and is distributed on annular and divides the bocca that divides the fire tube axial line to tilt to annular on the fire tube to form.

Adopt the utility model, in body of heater, formed and come and gone past three road heat exchange processes, improved heat exchange efficiency; To the preheating through the U-shaped economizer bank of the natural gas that sprays in the combustion formula gas nozzle, its burning-point reduces, burning more complete, and the flame of bocca ejection has the effect of concentrated flame aftercombustion, further improved the burn-off rate of natural gas; The air-flow of preheating chimney in can the preheating chimney makes its upwards operation of being heated, and produces negative pressure in burner hearth, and the start-up course of whole stove is simplified.

Fig. 1 is an overall structure schematic diagram of the present utility model;

Fig. 2 is that the A-A of Fig. 1 is to sectional view;

Fig. 3 is that the B-B of Fig. 1 is to sectional view;

Fig. 4 is a double plate tubular structure schematic diagram of the present utility model;

Fig. 5 is the structural representation to combustion formula gas nozzle of the present utility model;

The structure that Fig. 6 divides fire tube for the annular to combustion formula gas nozzle shown in Figure 5 and goes up uniform bocca is shown

Intention;

Fig. 7 is the front view of another kind of the present utility model to combustion formula gas nozzle;

Fig. 8 is an another kind shown in Figure 7 vertical view to combustion formula gas nozzle.

Below in conjunction with accompanying drawing the structure of the present utility model and the method for operation are further described: a kind of horizontal combustion gas dual layer discs pipe furnace, comprise cylindrical furnace 3, cylindrical burner hearth 20, duplex coil, the preheating chimney, to firing formula gas nozzle 18 etc., wherein in the cylindrical furnace 3 along axis be provided with the different inner coil pipe 12 of the diameter of two-layer mutual series connection and outside coil pipe 5, inner coil pipe 12 and outside the cylindrical shape separation layer 4 that one deck is made with refractory material is being set between the coil pipe 5, this separation layer 4 is connected with front furnace wall 19 is closed fully, be connected with rear hearth wall 8 Lower Halves are closed, the first half leaves a slit 7, and this separation layer 4 and inner coil pipe 12 are formed burner hearth 20 together; To combustion formula gas nozzle 18 is by U-shaped economizer bank 27, the annular that is connected U-shaped economizer bank 27 ends is divided fire tube 25 and is distributed on annular and divides the bocca 26 that divides fire tube 25 axial lines to tilt to annular on the fire tube 25 to form, it stretches in the burner hearth 20 by fire door 17, and the number of bocca 26 can increase and decrease according to the size of the utility model power; Natural gas is pre-heating temperature elevation in the U-shaped economizer bank at first, ejection burning from bocca 26 after annular is divided fire tube 25, and the flame that sprays from each bocca 26 pools a branch of burning that complements each other, and makes the abundant after-flame of combustible in the natural gas; The inwall of cylindrical furnace 3 and outside be provided with along horizontal axis in the toroidal cavity that forms between coil pipe 5 outer walls toroidal cavity be separated into two-part separation layer 21 up and down, this separation layer 21 is connected with rear hearth wall 8 is closed fully, and leave passage 23 between the front furnace wall 19, on the rear hearth wall 8 of the latter half 16 of toroidal cavity, have outlet flue 14; The preheating chimney be one from the above axis of rear hearth wall 8 radiuses position be provided with one in low outside high closed pre-heating flue 11, chimney 9 passes the end of this closed pre-heating flue 11, and be not connected with closed pre-heating flue 11, the outer setting of chimney 9 and closed pre-heating flue 11 has insulation layer 10; On the inboard of body of heater 3 and front and back hearth wall, be provided with insulation layer 2, be provided with flame retardant coating 1 in the inboard of insulation layer 2; Shoot door 15 and back shoot door 13 before having on front furnace wall 19 and the chimney 9.

When using the utility model, light the natural gas in the burner hearth earlier to bocca 26 ejections on the combustion formula gas nozzle 18, the heat of its generation is absorbed by the heat transferring medium in the inner coil pipe 12, produced simultaneously hot flue gas is by being arranged in the air of the closed pre-heating flue 11 heating chimneys 9 on the burner hearth 20 rear portion hearth walls 8, make its rising of being heated, in burner hearth 20, produce negative pressure, hot flue gas in the guiding burner hearth 20 is 7 the first half 6 that enter toroidal cavity through the slit, again the latter half 16 that enters toroidal cavity through passage 23 after outlet flue 14 enter and discharge out of the furnace in the chimney 9; Crude oil is introduced into outer coil pipe 5 by import 22, enters inner coil pipe 12 again, flows out from exporting 24 at last.

When the utility model power hour, can also be to cut a circular arc to the branch fire tube 28 on the combustion formula gas nozzle 18, be evenly equipped with thereon and point to the bocca 26 that divides same point on fire tube 28 axis.

Claims

1. horizontal combustion gas dual layer discs pipe furnace, comprise cylindrical furnace (3), cylindrical burner hearth (20), duplex coil, the preheating chimney, to firing formula gas nozzle (18) etc., it is characterized in that: in the cylindrical furnace (3) along axis be provided with the different inner coil pipe (12) of the diameter of two-layer mutual series connection and outside coil pipe (5), inner coil pipe (12) and outside the cylindrical shape separation layer (4) that one deck is made with refractory material is being set between the coil pipe (5), this separation layer (4) is connected with front furnace wall (19) is closed fully, be connected with rear hearth wall (8) Lower Half is closed, the first half leaves a slit (7); The inwall of cylindrical furnace (3) and outside be provided with along horizontal axis in the toroidal cavity that forms between coil pipe (5) outer wall toroidal cavity be separated into two-part separation layer (21) up and down, this separation layer (21) is connected with rear hearth wall (8) is closed fully, and leave passage (23) between the front furnace wall (19), on the rear hearth wall (8) of the latter half (16) of toroidal cavity, have outlet flue (14); The preheating chimney be one from the above axis of rear hearth wall (8) radius position be provided with one in low outside high closed pre-heating flue (11), chimney (9) passes the end of this closed pre-heating flue (11), and be not connected with closed pre-heating flue (11), the outer setting of chimney (9) and closed pre-heating flue (11) has insulation layer (10); To combustion formula gas nozzle (18) is by U-shaped economizer bank (27), is connected the terminal annular of U-shaped economizer bank (27) and divides fire tube (25) and be distributed on annular and divide bocca (26) composition that divides fire tube (25) axial line to tilt to annular on the fire tube (25).

2. a kind of horizontal combustion gas dual layer discs pipe furnace according to claim 1, it is characterized in that described can also be to cut circular arc to the branch fire tube (28) on the combustion formula gas nozzle (18), is evenly equipped with thereon and points to the bocca (26) that divides same point on fire tube (28) axis.