How I use power factor capistor for 22kw motor

You should find this helpful:

Power Factor for a Three-Phase Electrical Motor (http://www.engineeringtoolbox.com/power-factor-electrical-motor-d_654.html)

Practical power factor correction : POWER FACTOR (http://www.allaboutcircuits.com/vol_2/chpt_11/4.html)

You should do an economic study based on pf at full load and saving if corrected to, say,0.9 or 0.95.

Compare the cost of installing a capacitor with savings in electricity bill(kVA and kwh)if corrected to a certain pf