What should Juancheng County Environmental Protection Bureau do if it doesn't let the boiler burn?

If there is central heating, it will cooperate with local central heating.

If there is no central heating and boilers are not allowed (personally, they are coal-fired boilers), then you should apply for biomass boilers, oil-fired boilers and gas-fired boilers.

If there is no central heating, it is not allowed to use oil-fired boilers with relatively little pollution instead, that is, if there is a problem with the planning, you can complain directly to the government. (Personally, I think this possibility is very small. Are you the second case? )