The boiler fuel consumption calculation and combustion efficiency chart

Date:2020-03-09,Hits:60
 

The boiler fuel consumption calculation for coal steam boiler

As a common industrial boiler, coal-fired boilers have always been the preferred targets of many users. Bituminous coal, biomass, wood, corn stalks, palm husks, etc. can be used as boiler fuel. From the point of view of efficiency, the combustion efficiency of bituminous coal is the highest. Therefore, users are also very concerned about the fuel consumption of such boilers. Here, we will give the calculation formula of boiler consumption and the consumption of common boilers, so that customers can refer to it when selecting models. So, we list a reliable formula during boiler fuel consumption calculation. Meanwhile, a combustion efficiency chart is given in this article.

1  Calculation formula

The boiler fuel consumption calculation is below.

Here C recorded as the consumption, H as the rated calories of boiler, V as the burning value of  coal, E as the thermal efficiency of coal steam boiler.

                                                       C=H/V/E 

For example

1T coal steam boiler needs 600,000Kcal/h, the lowest burning value of coal is 5,500Kcal/kg, the thermal efficiency of boiler is about 80%(the highest efficiency of boiler from Yongxing is about 90%), then according to the formula:

                                                          C=H/V/E

                                                            =60000/5500/80%

                                                            =136kg/h

2  Note

In fact, there are many factors affecting the boiler fuel consumption calculation, such as the service life of the boiler, the use occasion, the boiler structure, the local altitude, the coal combustion efficiency, and the load. The above formula can provide a reference for users when selecting models, and the specific consumption should be determined according to the actual situation.

All data and formula comes from our company's laboratory.

3  The reference Table

The efficiency chart is as follows. We list the boiler fuel consumption calculation from 1t/h to 100t/h of steam boiler

NO.

Rated power (t/h)

Consumption(kg/h)

Note

1

1

136

Coal boiler

2

2

272

Coal boiler

3

4

544

Coal boiler

4

6

680

Coal boiler

5

8

1,088

Coal boiler

6

10

1,360

chain grate

7

12

1,632

Chain grate

8

15

2,040

Chain grate

9

20

2,720

Cured bed

10

25

3,400

Cured bed

11

30

4,080

Cured bed

12

45

6,120

Cured bed

13

75

10,200

Cured bed

14

90

12,240

Cured bed

15

100

13,600

Cured bed