properly set a session_name(0 before session start

Is there a way how to properly set the name of the session in CodeIgniter 4? 
I experience problems when executing a long script, the whole site is affected and you need to wait until the CURL finish.

In this example PHP, you can run multiple long scripts without waiting to finish.
Example: runCurl.php

PHP Code:

set_time_limit(0);

session_name("Curl-".microtime(true));
session_start();

## RUN 5 MINS CURL SCRIPT 

session_write_close();