Like what several posters have indicated, if you're in for the money, please go and study other majors which are finance related. Note that out of 1000, maybe only 1 will earn big bucks (more than 25kpm) in the finance industry.

However, if you're a good chem engineer, chances are you will be promoted and emplaced onto management track. By then, you'll be easily drawing 15k - 25k pm, depending on your roles and responsibilities. Having said that, there is a limit as to how much a chem engineer can earn even if he's on management track. Vis a vis a talent in the finance industry, the sky's the limit for their salary.

Word of advice, you have not even smell what chem engineering nor accountany nor finance related course are like. Don't assume it'll be a bed of roses and that things will go your way, you'll get FCH and land a good job. Find a course that interests you. Chances are you'll score better than studying a course with a "good" future but does not interest you. And oh, you'll need excellent grades, fantastic network, and good internship experience if you wish to land onto your dream job in finance. Even then, it's not a foul-proof method.