how to integrate paypal receive payment with merchant ID

[Balvant]

In Paypal how to receive payment from Paypal Merchant ID not email address.
I have use this code

// Use PayPal on Sandbox or Live
$config['sandbox'] = TRUE; // FALSE for live environment

// PayPal Business Email ID
$config['business'] = '';

// If (and where) to log ipn to file
$config['paypal_lib_ipn_log_file'] = BASEPATH . 'logs/paypal_ipn.log';
$config['paypal_lib_ipn_log'] = TRUE;

// Where are the buttons located at
$config['paypal_lib_button_path'] = 'buttons';

// What is the default currency?
$config['paypal_lib_currency_code'] = 'USD';

but i don't was use PayPal Business Email ID,

is there any api for use Paypal Merchant ID and get payment

Thanks