CN202018029U - Coal economizer for boiler - Google Patents

Abstract

The coal economizer for boiler includes casing, air inlet channel connected to the upper end of the casing and air outlet channel connected to the lower end of the casing. The beneficial effects are as follows: 1. the economizer can preheat tail gas generated in the process of burning the boiler, so that energy loss is reduced, energy is saved, and production cost is reduced; 2. the structure is simple, and the processing and the manufacturing are convenient; 3. the high-temperature exhaust emission is reduced, the purification is facilitated, and the air pollution is prevented.

Description

A kind of economizer for boiler

【Technical field】

The utility model relates to the technical field of boilers, in particular to an economizer for boilers.

【Background technique】

At present, coal-water slurry technology is generally used to burn boilers, and coal will still be the most reliable and economical energy source in my country for a long time. The replacement of fuel oil with coal slurry technology can not only save costs, but also facilitate the promotion and application of industrialization.

However, when coal-water slurry is used to burn boilers, the coal-water slurry will produce a large amount of high-temperature tail gas, and the discharge of high-temperature tail gas will not only cause environmental pollution, but also cause a lot of waste of energy. Therefore, the utility model designs a coal economizer aiming at the deficiencies in the prior art.

【Content of utility model】

The purpose of the utility model is to provide an economizer for boilers which utilizes tail gas generated during coal burning to preheat water, which is beneficial to energy saving.

The purpose of this utility model is achieved in that:

An economizer for a boiler, comprising a shell, the upper end of the shell is connected with an air intake channel, and the lower end of the shell is connected with an air outlet channel, and it is characterized in that a serpentine tube is arranged inside the shell, and the serpentine The water inlet and the water outlet of the pipe are respectively arranged on the outside of the casing.

A coal economizer for a boiler as described above is characterized in that there are multiple rows of serpentine tubes, and each row of serpentine tubes is connected end to end.

An economizer for a boiler as described above is characterized in that the serpentine tubes are arranged in horizontal and vertical rows alternately.

The beneficial effects of the utility model are as follows: 1. The economizer can use the tail gas generated when burning the boiler for preheating, which is beneficial to reduce energy loss, save energy and reduce production costs; 2. The structure is simple and easy to process and manufacture; 3. , Reduce high-temperature exhaust emissions, which is conducive to purification and prevention of air pollution.

【Description of drawings】

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail:

Fig. 1 is a schematic diagram of the utility model one;

Fig. 2 is the second schematic diagram of the utility model.

【Detailed ways】

As shown in the figure, the utility model refers to a kind of economizer for boilers, including a shell 1, the upper end of the shell 1 is connected with an air intake channel 2, and the lower end of the shell 1 is connected with an air outlet channel 3, Wherein, a serpentine pipe 4 is provided inside the housing 1 , and the water inlet 5 and the water outlet 6 of the serpentine pipe 4 are respectively arranged on the outside of the housing 1 .

In the present invention, the serpentine tubes 4 can be arranged in multiple rows, and each row of the serpentine tubes 4 is connected end to end. Said serpentine tubes 4 can also be arranged alternately in horizontal and vertical rows.

The utility model is using leaves, the soft water enters the serpentine tube 4 through the water inlet 5, and the exhaust gas generated by the boiler enters the shell 1 from the air intake channel 2, and exchanges heat with the serpentine tube 4, and the serpentine After the soft water in the pipe 4 is heated, it is pumped into the boiler through the water outlet 6, and the soft water is preheated by the exhaust gas, which reduces energy loss, improves heating efficiency, and is beneficial to reduce production costs. The heated tail gas is discharged into the atmosphere after purification to avoid air pollution.

Claims (3)

1. economizer that is used for boiler, the upper end that includes housing (1), housing (1) is connected with inlet channel (2), the lower end of housing (1) is connected with outlet passageway (3), it is characterized in that being provided with in housing (1) coiled pipe (4), the water inlet (5) of described coiled pipe (4) and delivery port (6) are separately positioned on the outside of housing (1).

2. a kind of economizer that is used for boiler according to claim 1 is characterized in that described coiled pipe (4) is provided with many rows, and every row's coiled pipe (4) is connected to end.

3. a kind of economizer that is used for boiler according to claim 1 is characterized in that described coiled pipe (4) is horizontally-arranged and vertical setting of types is crisscross arranged.

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