CN211119292U

CN211119292U - Condensing oil field steam injection boiler

Info

Publication number: CN211119292U
Application number: CN201922036985.4U
Authority: CN
Inventors: 何飞; 万喜军; 山德克; 陈云涛; 陈敏; 黄东
Original assignee: Xinjiang Petroleum Administration Co ltd; China National Petroleum Corp
Current assignee: Xinjiang Petroleum Administration Co ltd; China National Petroleum Corp
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-07-28
Anticipated expiration: 2029-11-22

Abstract

The utility model relates to a steam boiler technical field is annotated in oil field, is a condensing oil field steam boiler, including boiler body and heat exchanger, the tube side import of heat exchanger and boiler body's exhanst gas outlet end are linked together, and the tube side exit intercommunication of heat exchanger has the pipe of discharging fume, and the shell side import department intercommunication of heat exchanger has the import pipe, and the shell side export of heat exchanger and boiler body's the air inlet point or boiler body's the feedwater entrance point of being linked together. The utility model has the advantages of reasonable and compact structure, it realizes through setting up of heat exchanger that flue gas and boiler admit air or boiler feed water heat transfer within a definite time, has realized having reduced the energy waste to thermal abundant recycle in the flue gas.

Description

Condensing oil field steam injection boiler

Technical Field

The utility model relates to an oil field steam injection boiler technical field is a condensing oil field steam injection boiler.

Background

In the process of thick oil exploitation, steam is injected into the underground by using an oil field steam injection boiler to heat the crude oil in the stratum, so that the viscosity of the thick oil is reduced, and the fluidity of the thick oil is increased. The boiler combustion generates a large amount of flue gas, which contains a large amount of heat, including sensible heat of flue gas and water vapor and latent heat of water vapor, and the direct emission of the flue gas not only wastes a large amount of energy, but also causes air pollution due to the small amount of nitrogen oxides and sulfur oxides contained in the flue gas.

Disclosure of Invention

The utility model provides a condensing type oil field steam injection boiler has overcome above-mentioned prior art not enough, and it can effectively solve current condensing type oil field steam injection boiler and have the extravagant big problem of the energy.

The technical scheme of the utility model is realized through following measure: the utility model provides a condensing oil field steam injection boiler, includes boiler body and heat exchanger, and the tube side import of heat exchanger is linked together with the flue gas outlet end of boiler body, and the tube side exit department intercommunication of heat exchanger has the pipe of discharging fume, and the shell side import department intercommunication of heat exchanger has the import pipe, and the shell side export of heat exchanger is linked together with the air inlet point of boiler body or the feedwater entrance point of boiler body.

The following are further optimization or/and improvement of the technical scheme of the utility model:

the heat exchanger can comprise a shell, wherein an upper tube plate and a lower tube plate are arranged in the shell, the shell is divided into an upper chamber, a middle chamber and a lower chamber by the upper tube plate and the lower tube plate, a plurality of upper partition plates are arranged in the upper chamber in the left-right direction at intervals, each upper partition plate is arranged in the front-back direction, the upper chamber is divided into a plurality of first chambers by the plurality of upper partition plates, a lower partition plate is arranged in the front-back direction in the lower chamber corresponding to the position between every two adjacent upper partition plates, the lower chamber is divided into a plurality of second chambers by the plurality of lower partition plates, a shell pass partition plate is arranged in the left-right direction in the middle of the shell, each first chamber is divided into a first front chamber and a first rear chamber by the shell pass partition plate, the middle chamber is divided into a middle front chamber and a middle rear chamber by the shell pass partition plate, each second chamber is divided into a second front chamber and, a plurality of vertically arranged heat exchange tubes are arranged between the upper tube plate and the lower tube plate corresponding to each first front cavity and each first rear cavity, the heat exchange tubes positioned between every two adjacent upper clapboards are distributed at the left side and the right side corresponding to the lower clapboard, the right upper part of the shell side clapboard is provided with a first opening for communicating the rightmost first front cavity with the rightmost first rear cavity, the right middle part of the shell side clapboard is provided with a second opening for communicating the middle front cavity with the middle rear cavity, the left end of the shell corresponding to the rear side of the shell side clapboard is provided with a shell side inlet communicated with the middle rear cavity, the left end of the shell corresponding to the front side of the shell side clapboard is provided with a shell side outlet communicated with the middle front cavity, a pipe pass inlet communicated with the first rear cavity is arranged on the shell corresponding to the leftmost first rear cavity, and a tube pass outlet communicated with the first front cavity is arranged on the shell corresponding to the leftmost first front cavity.

The corresponding heat exchange tube lower position is provided with a condensate collecting box in each second front cavity and each second rear cavity, and the shell corresponding to each condensate collecting box is provided with a manhole.

The shell pass outlet of the heat exchanger can be communicated with the air inlet end of the boiler body, the inlet pipe is provided with an air blower, and the smoke exhaust pipe is provided with a draught fan.

The shell side outlet of the heat exchanger can be communicated with the feed water inlet end of the boiler body.

The utility model has the advantages of reasonable and compact structure, it realizes through setting up of heat exchanger that flue gas and boiler admit air or boiler feed water heat transfer within a definite time, has realized having reduced the energy waste to thermal abundant recycle in the flue gas.

Drawings

Fig. 1 is a schematic structural view of a first embodiment of the present invention.

Fig. 2 is a schematic sectional structural view of the heat exchanger shown in fig. 1.

Fig. 3 is a schematic top sectional view of the heat exchanger shown in fig. 1.

Fig. 4 is a left side sectional structural schematic view of the heat exchanger in fig. 1.

Fig. 5 is a schematic structural view of the second embodiment of the present invention.

The codes in the figures are respectively: 1 is the boiler body, 2 is the pipe of discharging fume, 3 is the import pipe, 4 is the casing, 5 is the top tube sheet, 6 is lower tube sheet, 7 is last baffle, 8 is lower baffle, 9 is the shell side baffle, 10 is the heat exchange tube, 11 is the condensate collecting box, 12 is the manhole, 13 is the air-blower, 14 is the draught fan, 15 is the tube side import, 16 is the tube side export, 17 is the shell side import, 18 is the shell side export.

Detailed Description

The utility model discloses do not receive the restriction of following embodiment, can be according to the utility model discloses a technical scheme and actual conditions determine concrete implementation.

In the present invention, for convenience of description, the description of the relative position relationship of the components is described according to the layout mode of the attached drawing 1 in the specification, such as: the positional relationship of front, rear, upper, lower, left, right, etc. is determined in accordance with the layout direction of the drawings of the specification.

The invention will be further described with reference to the following examples and drawings:

example one

As shown in the attached drawings 1-4, the condensing oil field steam injection boiler comprises a boiler body 1 and a heat exchanger, wherein a tube side inlet 15 of the heat exchanger is communicated with a smoke outlet end of the boiler body 1, a tube side outlet 16 of the heat exchanger is communicated with a smoke exhaust pipe 2, a shell side inlet 17 of the heat exchanger is communicated with an inlet pipe 3, and a shell side outlet 18 of the heat exchanger is communicated with an air inlet end of the boiler body 1. The boiler body 1 is the prior known technology, such as an overheating steam injection boiler, when a shell pass outlet 18 of a heat exchanger is communicated with an air inlet end of the boiler body 1, the heat exchange is carried out on air and flue gas entering the boiler body 1 through the heat exchanger, so that the air inlet temperature is improved, the heat in the flue gas is fully recycled, the energy waste is less, the temperature of the flue gas after the heat exchange is reduced to be lower than the dew point temperature of water, the emission of nitrogen oxides and sulfur oxides in the flue gas is reduced, and the pollution to the air is reduced.

The first embodiment can be further optimized or/and improved according to actual needs:

as shown in fig. 2-4, the heat exchanger includes a shell 4, an upper tube plate 5 and a lower tube plate 6 are arranged in the shell 4, the upper tube plate 5 and the lower tube plate 6 divide the interior of the shell 4 into an upper chamber, a middle chamber and a lower chamber, a plurality of upper partition plates 7 are arranged in parallel in the left-right direction and at intervals in the upper chamber, each upper partition plate 7 is arranged in the front-back direction, the upper chamber is divided into a plurality of first chambers by the plurality of upper partition plates 7, a lower partition plate 8 is arranged in the front-back direction in the lower chamber corresponding to the position between every two adjacent upper partition plates 7, the lower chamber is divided into a plurality of second chambers by the plurality of lower partition plates 8, a shell-side partition plate 9 is arranged in the left-right direction in the middle of the shell 4, the shell-side partition plate 9 divides each first chamber into a first front chamber and a first rear chamber, the front chamber and the middle-rear chamber in the middle chamber, the shell-side partition plate 9 divides each second chamber into a second front chamber and a, a plurality of vertically arranged heat exchange tubes 10 are arranged between the upper tube plate 5 and the lower tube plate 6 corresponding to each first front cavity and each first rear cavity, the heat exchange tubes 10 positioned between every two adjacent upper partition plates 7 are distributed at the left side and the right side corresponding to the lower partition plate 8, the upper right part of the shell side partition plate 9 is provided with a first opening communicated with the rightmost first front cavity and the rightmost first rear cavity, the middle right part of the shell side partition plate 9 is provided with a second opening communicated with the middle front cavity and the middle rear cavity, the left end of the shell 4 corresponding to the rear side position of the shell side clapboard 9 is provided with a shell side inlet 17 communicated with the middle rear cavity, the left end of the shell 4 corresponding to the front side of the shell side clapboard 9 is provided with a shell side outlet 18 communicated with the middle front cavity, the shell 4 corresponding to the leftmost first rear chamber is provided with a tube side inlet 15 communicated with the first rear chamber, the casing 4 corresponding to the leftmost first front chamber is provided with a tube side outlet 16 communicated with the first front chamber. Specifically, the upper partition plates 7 are two, the arrangement of the upper tube plate 5, the lower tube plate 6, the upper partition plates 7, the lower partition plates 8 and the shell side partition plates 9 prolongs the flowing stroke of a heat exchange medium, the heat exchange area is obviously increased, the heat recovery rate in flue gas is improved, the temperature of the flue gas can be reduced to be lower than the dew point temperature after heat exchange, the heat exchange tube 10 is vertically arranged, the situation that condensate condensed by the flue gas is accumulated in the heat exchange tube 10 and then corrodes the heat exchange tube 10 is avoided, and the service life of the heat exchanger is prolonged.

As shown in fig. 2 to 4, a condensate collecting tank 11 is provided in each of the second front chamber and the second rear chamber corresponding to the lower portion of the heat exchange tube 10, and a manhole 12 is provided in the casing 4 corresponding to each of the condensate collecting tanks 11. The condensate can be prevented from corroding the heat exchanger through the arrangement of the condensate collecting box 11, and the inner wall of the heat exchanger is convenient to clean through the arrangement of the manhole 12.

As shown in the attached figure 1, an air blower 13 is arranged on the inlet pipe 3, and an induced draft fan 14 is arranged on the smoke exhaust pipe 2. Thereby being beneficial to the rapid heat exchange of the air and the flue gas.

Example two

As shown in fig. 5, the shell side outlet 18 of the heat exchanger is in communication with the feed water inlet end of the boiler body 1. The arrangement of the heat exchanger realizes the heat exchange between the water supply of the boiler body 1 and the flue gas, so that the water supply temperature is improved, the heat in the flue gas is fully recycled, the energy waste is less, the temperature of the flue gas after heat exchange is reduced to be below the dew point temperature of the water, the emission of nitrogen oxides and sulfur oxides in the flue gas is reduced, and the pollution to the air is reduced.

Above technical feature constitutes the utility model discloses a best embodiment, it has stronger adaptability and best implementation effect, can increase and decrease unnecessary technical feature according to actual need, satisfies the demand of different situation.

Claims

1. The utility model provides a condensing oil field steam injection boiler, its characterized in that includes boiler body and heat exchanger, and the tube side import of heat exchanger is linked together with the flue gas outlet end of boiler body, and the tube side exit intercommunication of heat exchanger has the pipe of discharging fume, and the shell side import department intercommunication of heat exchanger has the import pipe, and the shell side export of heat exchanger is linked together with the air inlet point of boiler body or the feedwater entrance point of boiler body.

2. The condensing oil field steam injection boiler according to claim 1, wherein the heat exchanger comprises a casing, wherein an upper tube plate and a lower tube plate are disposed in the casing, the upper tube plate and the lower tube plate divide the casing into an upper chamber, a middle chamber and a lower chamber, a plurality of upper partition plates are disposed in the upper chamber in parallel in the left-right direction and at intervals, each upper partition plate is disposed in the front-back direction, the plurality of upper partition plates divide the upper chamber into a plurality of first chambers, a lower partition plate is disposed in the lower chamber between every two adjacent upper partition plates in the front-back direction, the plurality of lower partition plates divide the lower chamber into a plurality of second chambers, a shell-side partition plate is disposed in the middle of the casing in the left-right direction, the shell-side partition plate divides each first chamber into a first front chamber and a first rear chamber, the shell-side partition plate divides the middle chamber into a middle front chamber and a middle rear chamber, the shell-side partition plate divides each second chamber into a second front chamber and a second rear chamber, a plurality of vertically arranged heat exchange tubes are arranged between the upper tube plate and the lower tube plate corresponding to each first front cavity and each first rear cavity, the heat exchange tubes positioned between every two adjacent upper clapboards are distributed at the left side and the right side corresponding to the lower clapboard, the right upper part of the shell side clapboard is provided with a first opening for communicating the rightmost first front cavity with the rightmost first rear cavity, the right middle part of the shell side clapboard is provided with a second opening for communicating the middle front cavity with the middle rear cavity, the left end of the shell corresponding to the rear side of the shell side clapboard is provided with a shell side inlet communicated with the middle rear cavity, the left end of the shell corresponding to the front side of the shell side clapboard is provided with a shell side outlet communicated with the middle front cavity, a pipe pass inlet communicated with the first rear cavity is arranged on the shell corresponding to the leftmost first rear cavity, and a tube pass outlet communicated with the first front cavity is arranged on the shell corresponding to the leftmost first front cavity.

3. A condensing field steam injection boiler according to claim 2, wherein a condensate collection tank is provided in each of the second front chambers and in each of the second rear chambers at positions corresponding to the lower portions of the heat exchange tubes, and a manhole is provided in the casing at a position corresponding to each of the condensate collection tanks.

4. A condensing oil field steam injection boiler according to claim 1, 2 or 3, wherein the shell side outlet of the heat exchanger is communicated with the air inlet end of the boiler body, the inlet pipe is provided with an air blower, and the smoke exhaust pipe is provided with an induced draft fan.

5. A condensing field steam injection boiler according to claim 1, 2 or 3, wherein the shell side outlet of the heat exchanger is in communication with the feed water inlet end of the boiler body.