Types and significance of boilers

Yuyuan boiler has four types: coal-fired, oil-fired, gas-fired and biomass boilers:

(1) model:

Boiler number consists of three parts, connected by short horizontal lines, as shown in the following formula:

The first part of the model represents the types of boilers and combustion equipment and the boiler capacity, and it is divided into three parts. In the first paragraph, two Chinese phonetic letters are used to indicate the overall type of boiler; In the second paragraph, the Chinese phonetic alphabet is used to indicate the combustion equipment; In the third paragraph, Arabic numerals are used to indicate the rated evaporation capacity t/h of the steam boiler or the rated thermal power MW of the hot water boiler.

The second medium parameter of the model is divided into two sections (hot water boiler is divided into three sections), and the middle is connected by diagonal lines. The first paragraph indicates customized steam pressure or allowable working pressure; The second section indicates the superheated steam temperature (not indicated when the steam temperature is saturated); The second and third parts of the hot water boiler indicate the outlet water temperature and inlet water temperature.

The third part of the model represents the fuel type, which is represented by Chinese phonetic alphabet, and the Roman alphabet represents the fuel type classification? .

Specification for general type of shell boiler

General types of shell boilers

code name

General types of shell boilers

code name

Vertical boiler

still water

Horizontal external combustion

WW (lying outside)

Vertical fire tube

Left side (standing shot)

Horizontal internal combustion

WN (lying inside)

Note: The overall model code of the horizontal water-fire tube quick-loading boiler is DN. ?

What is the overall type code of water tube boiler?

General types of water-tube boilers

code name

General types of water-tube boilers

code name

Single drum vertical

simplex

Horizontal double-tube boiler

Double level

Single drum vertical

DZ (simplex)

Vertical and horizontal pots

ZH (vertical and horizontal)

Single drum horizontal type

DH (single level)

Forced circulation type

QX (required)

Double drum vertical

SZ (double vertical)

Combustion equipment code?

Fuel combustion system equipment

code name

Fuel combustion system equipment

code name

Fixed grate

G (solid)

Spreading feeder

throw

Fixed double furnace row

C layer

Vibrating grate

Z (vibration)

Movable hand grate

H (real-time)

Lower feed grille

Answer (below)

chain grate

chain

Fluorine solid furnace

F (boiling)

Reciprocating grate

W (go)

Combustion chamber combustion furnace

room

Note: pulverized coal boilers and oil-fired gas boilers belong to combustion chamber boilers, and the olefin combustion equipment is code-named S.

Fuel variety code?

Fuel type

code name

Fuel type

code name

Fuel type

code name

First-class inferior coal

lⅰ

First-class bituminous coal

A ⅰ

formed coal

X

Class Ⅱ inferior coal

lⅱ

Class Ⅱ bituminous coal

aⅱ

wood

M

Class Ⅰ anthracite

wⅰ

Grade Ⅲ bituminous coal

A ⅲ

rice chaff

D

Ⅱ anthracite

wⅰ

brown coal

H

bagasse

G

Ⅲ anthracite

wⅱ

meagre coal

P

diesel engine

y chromosome

Heavy? oil

YZ

coke-oven gas

QJ

oil shale

YM

natural gas

quart

LPG

QY

Other fuels

T

Note: ① Small oil-fired and gas-fired boilers are generally suitable for a variety of fuels, so the fuel code is generally written as Y or Q;

(2) In the boiler model representation method, for the atmospheric hot water boiler, just add the atmospheric code C before the model code, cancel the allowable working pressure, and the other representations remain unchanged.

(2) An example of the model?

model

Representative significance

LSS 0.2-0.04Y(Q)

Refers to the vertical water tube room boiler, rated evaporation 0.2t/h, rated steam pressure 0.04MPa, saturated temperature, and steam boiler with oil (or gas) as the main fuel.

WNS0.7-0.7/95/70-Y

The rated thermal power of the horizontal internal combustion furnace is 0.7MW, the allowable working pressure is 0.7MPa, the outlet water temperature is 95℃, the backwater temperature is 70℃, and the fuel is petroleum.

dz L2- 1.25-Aⅱ

Said a single drum longitudinal chain grate boiler, rated evaporation is 2t/h, rated steam pressure is 65438 0.25mpa, saturation temperature, and the fuel is Class II bituminous coal steam boiler.

SHL 20-2.5/400 Aⅲ

Said double drum transverse chain grate boiler, rated evaporation is 20t/h, rated steam pressure is 2.5? MPa, superheated steam temperature 400℃, and the fuel is three-grade bituminous coal.

CLHS0.5-95/70-Y

It is a vertical normal pressure hot water boiler with fire tube room, with rated thermal power of 0.5MW, outlet water temperature of 95℃, backwater temperature of 70℃ and fuel oil.