CN104140841B - A kind of ethane cracking furnace - Google Patents

Abstract

The invention discloses a kind of ethane cracking furnace, comprise: radiation chamber, convection cell, quenching boiler, flue and blower fan, convection cell is arranged on above radiation chamber, above convection cell, set gradually flue and blower fan, radiant coil is set in radiation chamber, convection current coil pipe is set, the length direction of convection current coil pipe institute vertical with the orientation of radiant coil in convection cell. Ethane cracking furnace of the present invention, can effectively solve that existing pyrolysis furnace production capacity is limited, heating tube in section of convection chamber length is long, equipment enlarging and convection cell design complicated problem to radiation chamber across pipe.

Description

A kind of ethane cracking furnace

Technical field

The present invention relates to cracking of ethylene field, furtherly, relate to a kind of ethane cracking furnace.

Background technology

Ethane cracking furnace is mainly divided into batch-type furnace and the twin furnace door type batch-type furnace of single burner hearth, wherein single burner hearthBatch-type furnace only has a radiation chamber, and twin furnace door type batch-type furnace has two radiation chambers. The batch-type furnace of single burner hearth andTwin furnace door type batch-type furnace all only has a convection cell, and convection cell bearing of trend and radiation chamber are in the same way, convection currentLength and the radiation chamber length of section boiler tube match, while so just causing increasing pyrolysis furnace production capacityCan increase the occupation of land of pyrolysis furnace and need equipment enlarging to adapt to it. Parallel due to convection cell and radiation chamberArrange and quenching boiler is arranged in the length direction of convection cell, therefore cause from convection cell to radiation chamber acrossPipe is arranged relative complex.

The typical pyrolysis furnace of prior art as shown in Figure 1, comprising: radiation chamber 10, convection cell 20,Changeover portion 14 and exhaust fume collecting hood, smoke evacuation system 50. Convection cell center line 200 is parallel with radiation chamber center line 100 and prolongStretch direction identical. In burner hearth flue gas from radiation chamber 10, changeover portion 14, convection cell 20 finally from exhaust fume collecting hood,Smoke evacuation system 50 is discharged. Material is connected finally and enters with radiant coil 11 across pipe 3 from convection current coil pipe 21 warpsQuenching boiler 13.

In sum, because body of heater configuration and expand can demand, existing pyrolysis furnace has that production capacity is limited, convection currentLength, equipment enlarging and convection cell design the shortcomings such as complicated to radiation chamber across pipe to section boiler tube length.

Summary of the invention

For solving problems of the prior art, the invention provides a kind of ethane cracking furnace, can efficient solutionDetermining, existing pyrolysis furnace production capacity is limited, length, equipment enlarging and convection cell arrive heating tube in section of convection chamber lengthRadiation chamber is across the complicated problem of pipe design.

The object of this invention is to provide a kind of ethane cracking furnace.

Comprise: radiation chamber, convection cell, quenching boiler, flue and blower fan, convection cell is arranged on radiation chamberFace, sets gradually flue and blower fan above convection cell, radiant coil is set in radiation chamber, in convection cell, arrangesConvection current coil pipe,

The length direction of described convection current coil pipe is vertical with the orientation of radiant coil.

Many group radiant coil are set in radiation chamber conventionally, the common vertical hanging of radiant coil in radiation chamber, andArrange along radiation chamber center line, the length direction of convection current coil pipe of the present invention is vertical with the orientation of radiant coil.

Described convection current coil pipe is by being connected with radiant coil across pipe pipe nipple. Be preferably ell across pipe pipe nippleRoad or π type compensator pipeline.

Described quenching boiler can be arranged on convection cell headwall outside or convection cell side wall outside, is preferably arranged onOn the convection cell center line extended line in convection cell headwall outside.

The quantity of described radiation chamber is one or two; The quantity of described convection cell is not more than 5;

The quantity of described flue is less than or equal to the quantity of convection cell; The quantity of described blower fan is consistent with flue quantity.

Described radiant coil vertical hanging is arranged in radiation chamber and along radiation chamber center line; Described convection current coil pipe edgeConvection cell center line level is arranged.

Specifically can be by the following technical solutions:

Pyrolysis furnace has the individual radiation chamber of n (n≤2) and the individual convection cell of m (m≤5); In each radiation chamber, be provided with many groupsRadiant coil, radiant coil is arranged along radiation chamber center line direction, and convection current coil pipe is set in each convection cell, rightFlow table pipe is arranged along convection cell center line level, and the length direction of convection current coil pipe and the orientation of radiant coil are hung downDirectly, the arragement direction of convection current coil pipe and radiant coil is arranged at an angle of 90, and makes convection cell become empty with radiation chamberBetween plumbness, flue gas directly enters convection cell from radiation chamber in burner hearth; Logical from convection current coil pipe to radiant coilCross across pipe pipe nipple and connect; Quenching boiler is in convection cell headwall outside, and can be at convection cell center line extended lineUpper layout also can be arranged between the adjacent convection cell side wall of two-phase; Flue is arranged on the top of convection cell, flueCan be the corresponding p(p of the individual convection cell of m (m≤5)≤m) individual flue with the corresponding relation of convection cell; Flue and windMachine is corresponding one by one.

Ethane cracking furnace of the present invention as shown in Figure 2, comprising: two radiation chambers, three convection cells, oneFlue and a blower fan. Convection cell center line and radiation chamber center line spatial vertical. In burner hearth, flue gas is from two radiationChamber enters finally discharges from flue and blower fan three stream chambers. Material from convection current coil pipe through across pipe pipe nipple and spokePenetrate coil pipe connection and finally enter quenching boiler. Quenching boiler is in convection section headwall outside layout and in convection cellOn line extended line. Three corresponding flues of convection cell.

As shown in Figure 3, quenching boiler is arranged in outside convection section headwall and on convection cell center line extended line.

As shown in Figure 4, quenching boiler is arranged in outside convection section headwall and between convection cell side wall.

As shown in Figure 5, quenching boiler is arranged in convection section headwall outside and in a row arranges.

As shown in Fig. 6,7,8, can be ell and π type compensator pipeline across pipe pipe nipple.

Adopt just the setting party of " length direction of convection current coil pipe is vertical with the orientation of radiant coil "Formula, ethane cracking furnace tool of the present invention has the following advantages:

(1), can save take up an area in increase pyrolysis furnace ability as much as possible, thereby increase pyrolysis furnaceProduction capacity, remarkable in economical benefits;

(2), convection cell and radiation chamber be arranged vertically, convection cell is to arrange according to the width of radiation chamber, because ofThe length of this single convection section just reduces greatly, and the equipment that routinizes just can meet Production requirement;

(3), pass through from convection current coil pipe to radiant coil, across the connection of pipe pipe nipple, to have simplified across pipe design.

Brief description of the drawings

Fig. 1 prior art pyrolysis furnace schematic diagram

Fig. 2 pyrolysis furnace schematic diagram of the present invention

Fig. 3 quenching boiler location arrangements Fig. 1

Fig. 4 quenching boiler location arrangements Fig. 2

Fig. 5 quenching boiler location arrangements Fig. 3

Fig. 6 is across pipe pipe nipple schematic diagram-across ell

Fig. 7 is across pipe pipe nipple schematic diagram-across π pipe 1

Fig. 8 is across pipe pipe nipple schematic diagram-across π pipe 2

Description of reference numerals:

10 – radiation chambers; 11 – radiant coil; 12 – are across pipe pipe nipple; 13 – quenching boilers;14 – changeover portions; 15 – are across pipe; 20 – convection cells; 21 – convection current coil pipes; 22 – convection currentChamber headwall; 23 – convection cell side walls; 30 – flues; 40 – blower fans; 50 – exhaust fume collecting hoods, smoke evacuationSystem; 100 – radiation chamber center lines; 200 – convection cell center lines.

Detailed description of the invention

Below in conjunction with embodiment, further illustrate the present invention.

Embodiment:

As shown in Figure 2, a kind of ethane cracking furnace, comprising: two radiation chambers 10, three convection cells 20, anxiousCold boiler 13, flue 30 and a blower fan 40, convection cell 20 is arranged on above radiation chamber 10, rightStream chamber 20 sets gradually flue 30 and blower fan 40 above, and radiation chamber 10 is interior arranges radiant coil 11, convection currentThe interior convection current coil pipe 21 that arranges in chamber 20,

Described radiant coil 11 vertical hangings are arranged in radiation chamber 10 and along radiation chamber center line 100; Described rightFlow table pipe 21 is arranged along convection cell center line 200 levels, the length direction of convection current coil pipe 21 and radiant coil 11Orientation vertical.

Described convection current coil pipe 21 is by being connected with radiant coil 11 across pipe pipe nipple 12. Across pipe pipe nipple 12 beRight angle pipeline.

Quenching boiler 13 is arranged in convection section headwall 22 outsides and on convection cell center line 200 extended lines.

Like this arrange pyrolysis furnace, can save take up an area in increase pyrolysis furnace ability as much as possible; RightArrange according to the width of radiation chamber in stream chamber, therefore the length of single convection section just reduces greatly, has reducedDevice fabrication difficulty, has effectively avoided equipment enlarging problem simultaneously; Pass through to radiant coil from convection current coil pipeConnect across pipe pipe nipple, simplified across pipe design.

Claims (5)

1. an ethane cracking furnace, comprising: radiation chamber, convection cell, quenching boiler, flue and blower fan, convection currentChamber is arranged on above radiation chamber, sets gradually flue and blower fan above convection cell, and radiation dish is set in radiation chamberPipe, arranges convection current coil pipe in convection cell, it is characterized in that:

The length direction of described convection current coil pipe is vertical with the orientation of radiant coil;

Described convection current coil pipe is by being connected with radiant coil across pipe pipe nipple;

Described is right angle pipeline or π type compensator pipeline across pipe pipe nipple;

Described quenching boiler is arranged on convection cell headwall outside or convection cell side wall outside.

2. ethane cracking furnace as claimed in claim 1, is characterized in that:

Described quenching boiler is arranged on the convection cell center line extended line in convection cell headwall outside.

3. the ethane cracking furnace as described in one of claim 1～2, is characterized in that:

The quantity of described radiation chamber is one or two; The quantity of described convection cell is not more than 5.

4. ethane cracking furnace as claimed in claim 3, is characterized in that:

The quantity of described flue is less than or equal to the quantity of convection cell; The quantity of described blower fan is consistent with flue quantity.

5. ethane cracking furnace as claimed in claim 3, is characterized in that:

Described radiant coil vertical hanging is arranged in radiation chamber and along radiation chamber center line; Described convection current coil pipe is along rightStream chamber center line level is arranged.