CN215523226U

CN215523226U - Waste heat boiler using hot water for energy supply

Info

Publication number: CN215523226U
Application number: CN202121542078.8U
Authority: CN
Inventors: 孙立新
Original assignee: Nanjing Nanguo Power Equipment Co ltd
Current assignee: Nanjing Nanguo Power Equipment Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2022-01-14
Anticipated expiration: 2031-07-08

Abstract

The utility model provides a waste heat boiler powered by hot water, comprising: hot-water tank, heat transfer device install in the hot-water tank below, and the hot-water tank heats through heat transfer device, and heat transfer device includes: high temperature flue gas import pipe, blast pipe are installed respectively to the both ends of heat transfer case, and blast pipe and tail gas processing apparatus intercommunication are installed to the heat transfer incasement and are managed, low tube bank, and the pipe is managed and is arranged by a plurality of heat exchange tubes that set up side by side with low tube and constitute, links to each other through heat transfer fin is fixed between two adjacent heat exchange tube lateral walls, and the pipe is arranged and is arranged at the heat transfer incasement with low tube bank interval. The utility model is provided with the heat exchange box, the upper tube bank and the lower tube bank are arranged in the heat exchange box at intervals to form the snakelike flue in the heat exchange box, and the upper tube bank and the lower tube bank are easy to disassemble, maintain and replace.

Description

Waste heat boiler using hot water for energy supply

Technical Field

The utility model relates to the field of boiler equipment, in particular to a waste heat boiler powered by hot water.

Background

Waste heat boilers are classified into fire tube type and water tube type. The tail gas generated after the incineration of solid hazardous materials contains a large amount of accumulated fine dust, dust particles have certain viscosity, the fire tube is easy to block, and the fire tube type waste heat boiler cannot be applied to the position due to the limitation of operating conditions, so that the water tube waste heat boiler is adopted. Circulating water and steam formed by heating flow in the heat exchange tubes, and tail gas flows outside the heat exchange tubes, so that indirect heat exchange between the tail gas and the circulating water is realized.

The utility model discloses a water tube type waste heat boiler and a tail gas treatment system in the patent number 'CN 112902128A', wherein a plurality of heat exchange tubes are arranged side by side to form a tube bank, the tube bank is used for enclosing to form an inner cavity, and a snake-shaped flue is separated from the inner cavity to improve the heat exchange effect of high-temperature flue gas and the heat exchange tubes, but the structure of the inner cavity enclosed by the heat exchange tubes is complex, the number of the heat exchange tubes is large, the heat exchange tubes are easy to damage, and the heat exchange tubes are not easy to maintain and replace.

Disclosure of Invention

In view of the above-mentioned problems in the background art, the present invention provides a waste heat boiler powered by hot water, comprising: hot-water tank, heat transfer device installs the hot-water tank below, the hot-water tank heats through heat transfer device, heat transfer device includes: the high-temperature flue gas inlet pipe and the exhaust pipe are installed at the two ends of the heat exchange box respectively, the exhaust pipe is communicated with the tail gas treatment device, an upper pipe row and a lower pipe row are installed in the heat exchange box, the upper pipe row and the lower pipe row are formed by a plurality of heat exchange pipes which are arranged side by side, the two adjacent heat exchange pipe side walls are fixedly connected through heat exchange fins, and the upper pipe row and the lower pipe row are arranged in the heat exchange box at intervals.

Furthermore, the top of the upper tube bank penetrates through and is inserted into the hot water tank, the front side and the rear side of the upper tube bank are fixedly connected with the front side wall and the rear side wall of the heat exchange box respectively, an upper tube bank circulating water pipe is arranged at the bottom of the upper tube bank, the upper tube bank circulating water pipe penetrates through the heat exchange box from front to rear and is provided with a gap with a bottom plate of the heat exchange box, and the bottom of the upper tube bank is communicated with the upper tube bank circulating water pipe; the front side and the rear side of the lower pipe row are fixedly connected with the front side wall and the rear side wall of the heat exchange box respectively, the upper end and the lower end of the lower pipe row are provided with an upper circulating pipe and a lower circulating pipe respectively, the upper circulating pipe penetrates through the heat exchange box from front to back and is provided with a gap with a top plate of the heat exchange box, the lower circulating pipe penetrates through the heat exchange box from front to back and is fixedly connected with a bottom plate of the heat exchange box, the upper end and the lower end of the lower pipe row are communicated with the upper circulating pipe and the lower circulating pipe respectively, and two ends of the upper pipe row circulating water pipe, the upper circulating pipe and the lower circulating pipe are communicated with the hot water tank.

Further, the method also comprises the following steps: the preheating water tank is arranged on the outer side wall of the heat exchange box in a surrounding mode, a water replenishing pipe and a water feeding pipe are respectively installed at two ends of the preheating water tank, the water replenishing pipe is communicated with an external water source, the water feeding pipe is communicated with the hot water tank, and a water feeding pump is installed on the water feeding pipe.

Further, a steam discharge pipe is installed at the top of the hot water tank and connected with steam power generation equipment.

Furthermore, the heat exchange tube and the heat exchange fins are made of the same material, and the heat exchange tube and the heat exchange fins are fixedly connected in a welding mode.

Furthermore, the heat exchange tubes and the heat exchange fins are made of metal materials with high heat conductivity coefficients.

Compared with the prior art, the utility model provides a hot water powered waste heat boiler, which has the following beneficial effects:

1. the utility model is provided with the heat exchange box, the upper tube bank and the lower tube bank are arranged in the heat exchange box at intervals to form the snakelike flue in the heat exchange box, and the upper tube bank and the lower tube bank are easy to disassemble, maintain and replace.

2. According to the utility model, the preheating water tank is arranged on the outer side wall of the heat exchange tank, and the preheating water tank is used for preheating water added into the hot water tank, so that the condition that the boiling state is unstable due to the fact that cold water is directly added into the hot water tank is avoided.

Drawings

Fig. 1 is a perspective view of a waste heat boiler powered by hot water.

Fig. 2 is a schematic sectional view of a waste heat boiler powered by hot water.

Wherein: 1-a hot water tank; 101-a steam discharge pipe; 2-a heat exchange box; 201-high temperature flue gas inlet pipe; 202-an exhaust pipe; 3, arranging a tube row; 301-upper pipe drainage circulating water pipe; 4-discharging the tube rows; 401-upper circulation pipe; 402-lower circulation pipe; 5-preheating a water tank; 501-water replenishing pipe; 502-water supply pipe; 6-water supply pump.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, specific embodiments accompanied with figures are described in detail below, and it is apparent that the described embodiments are a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present invention, shall fall within the protection scope of the present invention.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

The present invention will be described in detail with reference to the drawings, wherein the cross-sectional views illustrating the structure of the device are not enlarged partially in general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Meanwhile, in the description of the present invention, it should be noted that the terms "upper, lower, inner and outer" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation and operate, and thus, cannot be construed as limiting the present invention. Furthermore, the terms first, second, or third are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The terms "mounted, connected and connected" in the present invention are to be understood broadly, unless otherwise explicitly specified or limited, for example: can be fixedly connected, detachably connected or integrally connected; they may be mechanically, electrically, or directly connected, or indirectly connected through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, the present invention provides a waste heat boiler powered by hot water, comprising: hot-water tank 1, heat transfer device install in hot-water tank 1 below, and hot-water tank 1 heats through heat transfer device, and steam discharge pipe 101 is installed at the top of hot-water tank 1, and steam discharge pipe 101 is connected with steam power generation equipment, and heat transfer device includes: heat transfer case 2, high temperature flue gas inlet pipe 201, blast pipe 202 are installed respectively to the both ends of heat transfer case 2, and blast pipe 202 and tail gas processing apparatus intercommunication install upper tube bank 3, low tube bank 4 in the heat transfer case 2, and upper tube bank 3 comprises a plurality of heat exchange tubes that set up side by side with low tube bank 4, links to each other through heat transfer fin is fixed between two adjacent heat exchange tube lateral walls, and upper tube bank 3 sets up in heat transfer case 2 with 4 intervals of low tube bank. The utility model is provided with the heat exchange box, the upper tube bank and the lower tube bank are arranged in the heat exchange box at intervals, so that the serpentine flue is formed inside the heat exchange box, and the upper tube bank and the lower tube bank are not easy to damage and are easy to disassemble, maintain and replace.

Specifically, as described in detail below, the upper tube bank 3 and the lower tube bank 4 of the present invention are installed in the heat exchange box 2 in the following manner: the top of the upper tube bank 3 is inserted into the hot water tank 1 in a penetrating manner, the front side and the rear side of the upper tube bank 3 are fixedly connected with the front side wall and the rear side wall of the heat exchange box 2 respectively, an upper tube bank circulating water pipe 301 is arranged at the bottom of the upper tube bank 3, the upper tube bank circulating water pipe 301 penetrates through the heat exchange box 2 in the front and the rear direction and is provided with a gap with the bottom plate of the heat exchange box 2, and the bottom of the upper tube bank 3 is communicated with the upper tube bank circulating water pipe 301; the front side and the rear side of the lower pipe row 4 are respectively fixedly connected with the front side wall and the rear side wall of the heat exchange box 2, the upper end and the lower end of the lower pipe row 4 are respectively provided with an upper circulating pipe 401 and a lower circulating pipe 402, the upper circulating pipe 401 penetrates through the heat exchange box 2 from front to back and is provided with a gap with the top plate of the heat exchange box 2, the lower circulating pipe 402 penetrates through the heat exchange box 2 from front to back and is fixedly connected with the bottom plate of the heat exchange box 2, the upper end and the lower end of the lower pipe row 4 are respectively communicated with the upper circulating pipe 401 and the lower circulating pipe 402, and the two ends of the upper pipe row circulating pipe 301, the upper circulating pipe 401 and the lower circulating pipe 402 are communicated with the hot water tank 1. Through setting up upper tube bank circulating water pipe 301, upper circulating pipe 401, lower circulating pipe 402 make things convenient for the hot water circulation in upper tube bank 3 and the lower tube bank 4, conveniently install and dismantle upper tube bank 3 and lower tube bank 4 simultaneously.

The utility model provides continuous and stable steam for power supply and power generation only by keeping the water in the hot water tank in a stable boiling state, but the consumption of the hot water tank is reduced, so water needs to be supplemented into the hot water tank 1 from time to time, but when cold water is directly added into the hot water tank, the temperature in the hot water tank is rapidly reduced to stop boiling, so that the steam supply is unstable, and the utility model also provides the following steps for solving the problems: the preheating water tank 5 is arranged on the outer side wall of the heat exchange tank 2 in a surrounding mode, a water replenishing pipe 501 and a water feeding pipe 502 are respectively arranged at two ends of the preheating water tank 5, the water replenishing pipe 501 is communicated with an external water source, the water feeding pipe 502 is communicated with the hot water tank 1, and a water feeding pump 6 is arranged on the water feeding pipe 502. According to the utility model, the preheating water tank is arranged on the outer side wall of the heat exchange tank, and the preheating water tank is used for preheating water added into the hot water tank, so that the condition that the boiling state is unstable due to the fact that cold water is directly added into the hot water tank is avoided.

In order to ensure the heat exchange effect of the heat exchange tube, the heat exchange tube and the heat exchange fins are made of the same material, the heat exchange tube and the heat exchange fins are fixedly connected in a welding mode, and the heat exchange tube and the heat exchange fins are made of metal materials with high heat conductivity coefficients.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. A waste heat boiler powered by hot water, comprising: hot-water tank (1), heat transfer device installs hot-water tank (1) below, hot-water tank (1) heats through heat transfer device, its characterized in that, heat transfer device includes: heat transfer case (2), high temperature flue gas inlet pipe (201), blast pipe (202) are installed respectively to the both ends of heat transfer case (2), blast pipe (202) and tail gas processing apparatus intercommunication, install last bank of tubes (3), lower bank of tubes (4) in heat transfer case (2), last bank of tubes (3) with lower bank of tubes (4) comprise a plurality of heat exchange tubes that set up side by side, link to each other through heat transfer fin is fixed between two adjacent heat exchange tube lateral walls, go up bank of tubes (3) with lower bank of tubes (4) interval sets up in heat transfer case (2).

2. A waste heat boiler using hot water for energy supply according to claim 1, wherein the top of the upper tube bank (3) is inserted into the hot water tank (1) in a penetrating manner, the front side and the rear side of the upper tube bank (3) are fixedly connected with the front side wall and the rear side wall of the heat exchange tank (2), respectively, the bottom of the upper tube bank (3) is provided with an upper tube bank circulating water pipe (301), the upper tube bank circulating water pipe (301) penetrates the heat exchange tank (2) in a front-rear manner and is provided with a gap with the bottom plate of the heat exchange tank (2), and the bottom of the upper tube bank (3) is communicated with the upper tube bank circulating water pipe (301); the front side and the rear side of the lower pipe row (4) are fixedly connected with the front side wall and the rear side wall of the heat exchange box (2) respectively, an upper circulating pipe (401) and a lower circulating pipe (402) are arranged at the upper end and the lower end of the lower pipe row (4) respectively, the upper circulating pipe (401) penetrates through the heat exchange box (2) from front to rear and a gap is formed between the upper end and the lower end of the heat exchange box (2), the lower circulating pipe (402) penetrates through the heat exchange box (2) from front to rear and is fixedly connected with the bottom plate of the heat exchange box (2), the upper end and the lower end of the lower pipe row (4) are communicated with the upper circulating pipe (401) and the lower circulating pipe (402) respectively, and the two ends of the upper pipe row circulating water pipe (301), the upper circulating pipe (401) and the lower circulating pipe (402) are communicated with the hot water tank (1).

3. A hot water powered waste heat boiler as claimed in claim 2, further comprising: preheating water tank (5), preheating water tank (5) encircle to set up on the outside lateral wall of heat transfer case (2), moisturizing pipe (501), feed pipe (502) are installed respectively to the both ends of preheating water tank (5), moisturizing pipe (501) and outside water source intercommunication, feed pipe (502) with hot-water tank (1) intercommunication, install feed pump (6) on feed pipe (502).

4. A waste heat boiler using hot water for energy supply according to claim 1, characterized in that a steam outlet pipe (101) is installed at the top of the hot water tank (1), and the steam outlet pipe (101) is connected with a steam power plant.

5. The waste heat boiler powered by hot water as claimed in claim 1, wherein the heat exchange tube and the heat exchange fins are made of the same material, and are fixedly connected with each other by welding.

6. A hot water powered waste heat boiler as claimed in claim 5, wherein the heat exchange tubes and the heat exchange fins are made of a metal material having a high thermal conductivity.