CN210921332U

CN210921332U - Small-sized waste heat boiler

Info

Publication number: CN210921332U
Application number: CN201921047147.0U
Authority: CN
Inventors: 孙正; 韩爱平; 陈雪芹; 陈荣玉; 董强
Original assignee: Jiangsu Zhengyang Boiler Co ltd
Current assignee: Jiangsu Zhengyang Boiler Co ltd
Priority date: 2019-07-06
Filing date: 2019-07-06
Publication date: 2020-07-03
Anticipated expiration: 2029-07-06

Abstract

The utility model discloses a small-size exhaust-heat boiler has solved current compact structure nature poor, popularizes and applies the problem of difficulty. The technical scheme is as follows: a small-sized waste heat boiler comprises a base, a heat exchanger and a steam drum, wherein a closed water cavity is arranged in the heat exchanger, a plurality of smoke guide pipes are arranged in the heat exchanger in parallel, the water cavity is communicated with the steam drum through a plurality of cold water pipes and hot water pipes, the small-sized waste heat boiler is characterized in that the base is hollow, a smoke inlet chamber and a smoke outlet chamber which are separated from each other are arranged in the base, the heat exchanger is vertically arranged on the base, the upper side of the heat exchanger is provided with a smoke inlet chamber, part of the smoke guide pipes are communicated with the smoke inlet chamber and the smoke outlet chamber, and the other part of the smoke guide pipes are communicated with the.

Description

Small-sized waste heat boiler

Technical Field

The utility model relates to a boiler especially relates to a utilize flue gas waste heat to carry out miniaturized exhaust-heat boiler that heats fluid medium.

Background

The boiler is used as a heat exchange device for realizing heat conversion. The existing boilers mainly have two types, one is a chemical fuel type boiler, and the other is a waste heat type boiler which recycles heat in industrial flue gas. The waste heat boiler is used as energy-saving and environment-friendly equipment, so that energy can be effectively saved, and the influence of the discharged flue gas on the atmosphere is reduced. The existing waste heat boiler is mainly applied to the industry, the compactness in structural design is relatively poor, the occupied area is large, the manufacturing cost is high, the application field of the waste heat boiler is relatively narrow, and the popularization and the application of the waste heat boiler are not facilitated.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above defect, the utility model discloses the technical problem who needs to solve: the small waste heat boiler has the advantages of good structure compactness and relatively wide application field.

For solving the technical problem, the technical scheme of the utility model: a small-sized waste heat boiler comprises a base, a heat exchanger and a steam drum, wherein a closed water cavity is arranged in the heat exchanger, a plurality of smoke guide pipes are arranged in the heat exchanger in parallel, the water cavity is communicated with the steam drum through a plurality of cold water pipes and hot water pipes, the small-sized waste heat boiler is characterized in that the base is hollow, a smoke inlet chamber and a smoke outlet chamber which are separated from each other are arranged in the base, the heat exchanger is vertically arranged on the base, the upper side of the heat exchanger is provided with a smoke inlet chamber, part of the smoke guide pipes are communicated with the smoke inlet chamber and the smoke outlet chamber, and the other part of the smoke guide pipes are communicated with the.

The main working medium in the waste heat boiler is flue gas and water, the heat exchanger is communicated with the steam pocket through the cold water pipe and the hot water pipe, a circulation loop is formed between the heat exchanger and the cold water pipe, the flue gas is utilized to heat water through the heat exchanger, and the temperature of the flue gas during discharge is reduced.

Furthermore, a heat conductor is arranged on the upper side of the upper smoke chamber, a closed cavity is arranged in the heat conductor, a plurality of guide pipes are arranged in the cavity in parallel and communicated with the upper smoke chamber, and the guide pipes are communicated with the cavity and the steam pocket.

Furthermore, an air preheater is arranged on the upper side of the heat conductor, an air channel is arranged in the air preheater, and a plurality of heat exchange tubes communicated with the guide tube are arranged in the intercepting surface of the air channel.

Furthermore, an energy saver is arranged on the upper side of the heat conductor, the energy saver and the air preheater are arranged together in parallel, a water channel is arranged in the energy saver, and a plurality of heat exchange tubes communicated with the guide tube are arranged in the interception surface of the water channel.

Furthermore, the part of the heat exchanger connected with the cold water pipe and the hot water pipe is positioned at one side of the smoke inlet chamber.

Further, the ash falling port at the bottom of the smoke outlet chamber is communicated with the inside and the outside of the smoke outlet chamber, a dust removal device is arranged on the upper side of the ash falling port in the smoke outlet chamber, a cyclone structure for smoke to pass through is arranged in the dust removal device, and the cyclone structure is spirally arranged.

Therefore, the utility model has the advantages that: in this small-size waste heat boiler, through setting up hollow base to be provided with the spaced cigarette room of advancing and go out the cigarette room in the base, advance to be provided with the heat exchanger between cigarette room and the play cigarette room, make the flue gas can pass through the heat exchanger well, satisfy energy conversion's requirement. The heat exchanger is arranged on the upper side of the base, and the open upper smoke chamber is formed above the heat exchanger, so that some heat exchange equipment can be arranged above the upper smoke chamber, and the function of the waste heat boiler can be conveniently expanded. The heat exchange devices are communicated with the upper smoke chamber to realize energy conversion, so that the small waste heat boiler has the advantages of good structure compactness, small occupied area and low manufacturing cost, and is convenient to popularize and apply. This small-size exhaust-heat boiler can make full use of the heat energy in the flue gas, and the convenience is to the processing of flue gas.

Drawings

Fig. 1 is a front view of the small waste heat boiler.

Fig. 2 is a left side view of the small waste heat boiler.

Fig. 3 is a plan view of the small heat recovery boiler.

Detailed Description

With the attached drawings, the small waste heat boiler is used for treating flue gas generated in industry or after waste incineration so as to heat gas or liquid working medium by utilizing heat contained in the flue gas, and simultaneously, the flue gas is treated with particle dust contained in the flue gas before being discharged.

The structure of the small waste heat boiler comprises a base 16, a heat exchanger 11 and a steam drum 5. The steam drum 5 is used for storing water therein, and a water level gauge 15 for controlling a water level is provided on the steam drum 5, and the water level gauge 15 is provided at a corresponding height of the steam drum 5, corresponding to an overflow, to define a liquid level in the steam drum 5. A closed water cavity is arranged in the heat exchanger 11, a plurality of smoke guide pipes 10 are arranged in the heat exchanger 11 in parallel, and the smoke guide pipes 10 are made of stainless steel. Water is injected into the water cavity and the steam drum 5, and the water cavity is communicated with the steam drum 5 through a plurality of cold water pipes 2 and hot water pipes 3. When the steam-cooling water heating device works, smoke flows through the water cavity in the smoke guide pipe 10, the smoke and the water penetrate through the wall body of the smoke guide pipe 10 to realize heat exchange, the cold water pipe 2 and the hot water pipe 3 form a water loop between the steam pocket 5 and the water cavity, the cold water and the hot water flow, and heating is completed.

The base 16 is hollow, and a partition plate is arranged in the base 16, so that the base 16 is internally provided with a smoke inlet chamber 1 and a smoke outlet chamber 14 which are separated. The high-heat smoke enters the smoke inlet chamber 1 from the outside, flows through the corresponding heat exchange equipment, and is finally discharged from the smoke outlet chamber 14. The heat exchanger 11 is vertically arranged on a base 16, and the steam drum 5 is arranged outside the heat exchanger 11 through the support of a bracket 17. In the small-sized waste heat boiler, an upper smoke chamber 9 is arranged on the upper side of a heat exchanger 11. In the heat exchanger 11, part of the smoke guide pipe 10 is communicated with the upper smoke chamber 9 and the smoke inlet chamber 1, and the other part of the smoke guide pipe 10 is communicated with the upper smoke chamber 9 and the smoke outlet chamber 14. The part of the heat exchanger 11 connected with the cold water pipe 2 and the hot water pipe 3 is positioned at one side of the smoke inlet chamber 1, thereby being well suitable for heating water by smoke and being convenient for forming a quick loop.

In order to further fully utilize the heat in the smoke, a heat conductor 8 is also arranged on the upper side of the upper smoke chamber 9, and the structure of the heat conductor 8 is similar to that of the heat exchanger 11. A closed cavity is arranged in the heat conductor 8, a plurality of guide pipes are arranged in the cavity in parallel, and the guide pipes are also made of stainless steel. The lower end of the conduit is communicated with the upper smoke chamber 9, and the upper end of the conduit is communicated with other heat exchange equipment. The cavity is also used for containing water, the guide cylinder 4 is communicated with the cavity and the steam drum 5, and the flue gas flowing through the heat conductor 8 is used for heating the water in the cavity. The guide cylinder 4 is approximately horizontally arranged, and the height difference between the steam drum 5 and the heat conductor 8 is not large.

An air preheater 6 is arranged on the upper side of the heat conductor 8, an air channel is arranged in the air preheater 6, and a plurality of heat exchange tubes communicated with the guide tubes are arranged in the intercepting surface of the air channel. The heat exchange tube is also made of stainless steel, when air flows in the air duct, the air can be preheated by smoke flowing through the heat exchange tube, and the preheated air can be guided into the fuel of the boiler to dry and preheat the fuel, so that the fuel can be combusted conveniently. This is very important for the garbage incinerator, and the garbage dried by the hot air is more convenient to burn. The miniaturized waste heat boiler can be well popularized and applied, can be used even in rural areas, expands the application field, facilitates the treatment of garbage, and is beneficial to the improvement of the environment.

An economizer 7 is further provided on the upper side of the heat conductor 8, and the economizer 7 is provided in parallel with the air preheater 6. The energy saver 7 can heat some fluid by utilizing the residual heat energy in the flue gas, in the waste heat boiler, a water channel is arranged in the energy saver 7, a plurality of heat exchange tubes communicated with the guide tube are arranged in the cut-off surface of the water channel, and the energy saver 7 is used for heating the flowing water.

On the upper end side of the heat conductor 8 and the heat exchanger 11 there is a closed structure, such as a closed housing, which limits the outflow of flue gases. A loop for the flow of the flue gas is formed between the heat conductor 8, the air preheater 6, the economizer 7 and the closed structure, so that the flue gas finally enters the flue gas outlet chamber 14 and is discharged to the outside.

This small-size exhaust-heat boiler's main working medium is the flue gas, can contain the granule dust in the flue gas, for reducing the pollution of flue gas to the environment, the flue gas need be through dust removal processing before being discharged. Therefore, an ash drop port is provided at the bottom of the smoke chamber 14, and the ash drop port communicates with the inside of the smoke chamber 14 and the outside. A dust removal device 12 is arranged on the upper side of the ash falling opening in the smoke outlet chamber 14, and a rotational flow structure for smoke to pass through is arranged in the dust removal device 12 and is spirally arranged. The tubular structure that the whirl structure can spiral setting, also can be the slot-like structure of spiral setting, and the flue gas can form spiral advancing direction under the limiting action of whirl structure when dust collector 12 flows through, and the flue gas can generate centrifugal force at the in-process of marcing, through centrifugal force, makes in the flue gas thick dust fall and enter into the ash bin that falls of lower part. An exhaust port 13 is arranged on the upper side of the dust removing device 12 on the smoke outlet chamber 14, smoke exhausted from the exhaust port 13 is greatly cooled, and contained particles can be effectively controlled.

Claims

1. A small-sized waste heat boiler comprises a base, a heat exchanger and a steam drum, wherein a closed water cavity is arranged in the heat exchanger, a plurality of smoke guide pipes are arranged in the heat exchanger in parallel, the water cavity is communicated with the steam drum through a plurality of cold water pipes and hot water pipes, the small-sized waste heat boiler is characterized in that the base is hollow, a smoke inlet chamber and a smoke outlet chamber which are separated from each other are arranged in the base, the heat exchanger is vertically arranged on the base, the upper side of the heat exchanger is provided with a smoke inlet chamber, part of the smoke guide pipes are communicated with the smoke inlet chamber and the smoke outlet chamber, and the other part of the smoke guide pipes are communicated with the.

2. The small size waste heat boiler according to claim 1, wherein the upper side of the upper flue chamber is provided with a heat conductor, a closed cavity is arranged in the heat conductor, a plurality of guide pipes are arranged in the cavity in parallel, the guide pipes are communicated with the upper flue chamber, and the guide pipes are communicated with the cavity and the steam pocket.

3. The small size waste heat boiler according to claim 2, wherein an air preheater is provided at an upper side of the heat conductor, an air duct is provided in the air preheater, and a plurality of heat exchange pipes communicating with the guide pipe are provided in a cutoff surface of the air duct.

4. A small size waste heat boiler according to claim 3, characterized in that an economizer is further provided at an upper side of the heat conductor, the economizer is provided in parallel with the air preheater, a water passage is provided in the economizer, and a plurality of heat exchange tubes communicating with the guide tube are provided in a cutoff surface of the water passage.

5. The small size waste heat boiler according to any one of claims 1 to 4, wherein the portion of the heat exchanger connected to the cold water pipe and the hot water pipe is located at one side of the smoke inlet chamber.

6. The small size waste heat boiler according to any one of claims 1 to 4, wherein an ash falling port at the bottom of the smoke outlet chamber is communicated with the inside of the smoke outlet chamber and the outside, a dust removing device is arranged at the upper side of the ash falling port in the smoke outlet chamber, a rotational flow structure for smoke to pass through is arranged in the dust removing device, and the rotational flow structure is arranged spirally.