20t coal fired chain grate boiler in Pakistan
Recent days, Pakistan market have a large demand on chain grate boilers, They want coal used fire to chain grate boiler. One customer engaged in a big textile industry in Pakistan, he want to buy 20 ton coal fired chain grate boilers build in his new factory. We recommend him using our SZL 20 ton coal fired boilers for their production.
20 ton coal fired boiler design:
ZG provide a nice design for coal fired boiler of Pakistan customer. SZL is double drum chain grate boilers. It has chain grate steam boiler and chain grate hot water boiler. Both of boiler have DZL and SZL types. We can provide either one for customers.The SZL coal fired chain grate boiler we provide for Pakistan clients, see below pic:
SZL chain grate coal fired boilers
Below one is DZL boiler,it is single drum with chain grate design and coal used fuels.
DZL coal fired chain grate boilers
How a 20 ton coal fired boiler working is a main question what clients caring about, here, I will talking about how a coal boiler working during production in briefly below:
The hot gases from the combustion process move from the bottom left to the top and then down the right hand side of the boiler structure. As the hot gas moves through the boiler it loses energy to the water and the gases becomes cooler as a result. There are various heat exchangers in the boiler which extract energy from the hot gases and transfer it to water. The following diagram shows the inner workings of a boiler. The numbers in the diagram are described below.
Coal fired boiler working principle
Coal powder and air are blown into the boiler and combust to form a fireball.
1. Cool feedwater enters the boiler at the bottom right.
2.The feedwater is heated in the economizer by the warm exhaust gases exiting the boiler
3.The warm feedwater is sent to the steam drum
4. where liquid water is separated from steam formed in the waterwall. In a super critical coal plant steam is not created. Liquid water becomes a supercritical fluid in the superheaters at a pressure of greater than 221 bar and a temperature of greater than 400C. Therefore there is no steam drum. In a supercritical boiler warmed feedwater passes directly into the downcomers.
5.Liquid water flows down the downcomers on the outside of the boiler to the bottom of the boiler.
6.Water flows up the tubes in the waterwalls of the boiler and surround the fireball of burning coal. The water in the tubes is heated by radiation from the fireball. Some of the water in these tubes turns into steam.
7. The steam and water in the waterwall tubes is sent to the steam drum, where steam is separated from liquid water. Liquid water in the steam drum flows down the downcomers on the outside of the boiler.
8.Steam from the steam drum is sent to the primary superheater.
9. Steam is super heated to a high temperature and pressure in the primary superheaters and then moves to the secondary superheaters.
10.In the secondary superheaters steam meets the very hot gases exiting the top of the boiler. The steam is heated to its final temperature and pressure before leaving the boiler as main steam. The main steam is sent to the high pressure steam turbine. The steam turbines drive a generator which produces electricity.
11.Steam exiting the high pressure steam turbine is called cold reheat.
It is reheated in the re-heater and sent back to the second steam turbine. By the time the flue gas exits the boiler most of the energy in the coal will be transferred to the water in the boiler. The hot gases are cleaned up before they are sent to a stack. Feed water is generally supplied by condensed steam from the low pressure steam turbine. Large amounts of cooling water are used to condense this steam into liquid water in the condenser.
Contact with us for more information about 20 coal fired chain grate boiler, such as boiler price & cost, installation time, delivery time, payment ways etc. At email: [email protected]
Or leave your boiler requirement details in below comment form. We will back to you within 24 hours.
Tag: horizontal boiler,20,20t coal fired chain grate boiler in Pakistan, chain grate coal fired boiler in PakistanWhy choose ZG boiler products?
We have a professional installation and after-sales staff,
We have the largest factories and production capacity,
We have a professional sales and service team.
Q: How much the price of 20t coal fired chain grate boiler in Pakistan?
A: We need know the details of 20t coal fired chain grate boiler in Pakistan, for example cpacity, pressure, etc, water tube boiler cost, please contact online service by click here
Pre :Horizontal hot water boiler in India textile industry
Next :CFB Circulating Fluidized Bed Boiler Design and Type
Send your inquiry to us
Industrial horizontal wood pellet fired steam boil
Industrial horizontal wood pellets boiler is a common type of biomass boiler, an...
10 ton 12.75 kgf/cm² wns series oil and gas boile
10 ton 12.75 kgf/cm² wns series oil and gas boiler is horizontal type package b...
1 ton 3 ton 5 ton 10 ton 15 ton 20 ton oil and gas
Our 1 ton 3 ton 5 ton 10 ton 15 ton 20 ton oil and gas fire tube boiler is wns s...
1 ton oil gas steam boiler details
ZBG 1 ton oil and gas steam boiler is a wns series horizontal fire tube boiler...
3 ton natural gas boiler for sale
3 ton natural gas boiler for sale is horizontal type fast assembly fire tube boi...
1.4 MW oil gas hot water boiler
1.4 MW oil gas hot water boiler capacity is 1.4 MW, working pressure is 1.0Mpa, ...
Related News about horizontal boiler
Product classification
Industrial horizontal boiler Application
steam boiler for the tobacco industry 
steam boiler for plywood production 
biomass boiler for wood processing industry palm oil factory - industrial steam boiler for tofu machine
industrial steam boiler for processing soybean products
Steam boiler
- Horizontal type Gas steam boiler
- Horizontal type Oil steam boiler
- Horizontal type Biomass steam boiler
- Horizontal type Coal steam boiler
- Horizontal type Chain grate steam boiler
Hot water boiler
- Horizontal type Gas hot water boiler
- Horizontal type Oil hot water boiler
- Horizontal type Biomass hot water boiler
- Horizontal type Coal hot water boiler
- Horizontal type Chain grate hot water boiler
News & Cases
- 3500hp high pressure gas steam boiler...2019-08-13
- boiler drum...2019-07-24
- 4 ton biomass steam boiler for tobacco factory...2019-08-23
- 6 t/h gas steam boiler in Iran...2019-08-15
- boiler fuel preparation and supply system...2019-03-11
- Coal fired hot water boiler...2018-11-06
