(14) Flue gas entering the dryer:

Where ι ₂ ———the total amount of flue gas, kg/h;
ρ ₁ ——— total flue gas density, kg/m ³ ;
ρ _G ———the density of flue gas under standard conditions, kg/h; ρ _G value generally takes 1.34;
V ₁ ———the total volume of flue gas, m ³ /h;
ι ₀ ———The amount of dry flue gas produced by burning one kilogram of coal . See formula (8)
g ₃ ———The amount of water vapor entering the dry explosion machine at the same time as the flue gas, kg/kg. See formula (10)
t ₁ ———the temperature of the flue gas entering the dryer, °C;
ι ₁ ——— Dryer flue gas required per hour, kg/h. See formula (15).
(15) Fuel coal consumption:

Where G ₃ ———fuel coal consumption (not considering 10% incomplete combustion loss), kg/h;
ι ₁ ———The amount of dry flue gas required per hour for the dryer, kg/h. See formula (15)
ι ₀ ———The amount of thousand flue gas produced by burning one kilogram of coal, kg/kg. See formula (8)
(16) The calorie consumption of vaporized water can be calculated by the amount of flue gas and heat content required to vaporize one kilogram of water:
q=ι(I ₁ -I ₀ ) (20)
Where q———heat consumption of one kilogram of water vaporized, kJ/kg;
ι———Thousand flue gas volume required for evaporating water, kg/kg, see formula (14);
I ₀ ———the air heat content when the temperature is t _{0 and the} humidity is Ñ„ ₀ , kJ/kg dry air;
I ₁ ———The heat content of the flue gas entering the dryer, kJ/kg. See equation (12). [next]
(17) Exhaust gas from the dryer:

Where ι ₃ ———the weight of the exhaust gas discharged from the dryer, kg/h;
V ₂ ——— volume of exhaust gas discharged from the dryer, m3/h;
Ρ ₂ ——— the density of exhaust gas at a temperature of t ₂ ;

p ₀ ———pressure, Pa, generally take 99325Pa
t ₂ ———Exhaust gas temperature, °C;
W———the amount of vaporized water in the drying process, kg/h. See formula (1);
ι ₂ ——— Total amount of flue gas entering the dryer per hour, kg/h. See formula (16);
d ₂ ———The moisture content of the exhaust gas from the dryer, kg/kg.
(18) The volume of the final exhaust gas discharged by the induced draft fan:
V _m =1.2V ₂ (23)
Where V _m — the volume of the final exhaust gas, m ³ /h;
1.2———the reserve coefficient;
V ₂ ———The volume of exhaust gas from the dryer, m ³ /h.[next]
B Using gas as fuel (1) The amount of vaporized water in the drying process is calculated according to formula (1).
(2) The calorific value of burning one kilogram of gas:
Q _YDW =[22.4(5.32CH ₄ +5.07C ₂ H ₄ +5.05C ₂ H ₆ +4.91C ₃ H ₆ +4.84C ₃ H ₈ +4.94C ₄ H ₈
+4.87C ₄ H ₁₀ +4.83C ₅ H ₁₂ +1.08CO+12.75H ₂ +1.6H ₂ S+4.9C _x H _y )]×4.1868 (24)

Where Q _YDW ——— low calorific value of gas, kJ/kg;
Q _YGW ———High calorific value of gas, kJ/kg;
CH ₄ ... H ₂ S———weight percent of each component of the gas, %;
x, y—the number of hydrocarbon atoms in the hydrocarbons of the x and y gas components in C _x and H _y . The x and y in C _x H _y without the subdivided components take the average of the components.
(3) Theoretical value of the amount of air required to burn one kilogram of gas:

Where L ₀ ———the weight of the theoretical air amount, kg/kg;
O ₂ ———% of oxygen in the gas, %;
CO, H ₂ , H ₂ S—the content of carbon monoxide, hydrogen and hydrogen sulfide in the gas, %;
x, y——— See the corresponding symbol of formula (25).

XY Core Drilling Rig

Hydraulic Core Drilling Rigs / Geotechnical Exploration Small Water Well Drilling Rig Machine

Bore hole water well drilling machine is a kind of widely used portable drill machine. Water well drilling rig is suitable for drilling water well, geological survey, geological core drilling, small grouting holes, blasting holes of railway, water conservancy, bridges, dam foundation and other buildings. According to different strata, it drills by choosing different bits, such as, diamond composite films and alloy.