the cyclone exits to effectively modulate gasifier exit temperature and reduction in overall height of the gasifier with a modified non mechanical valve application_number US 96999710 A description various embodiments and illustrations of a transport gasifier loop according to embodiments of the disclosure are described by examples and illustrations fig1 illustrates the transport gasifier loop 100 the gasifier vessel wall can be made of carbon steel and the shell can also constitute the pressure boundary of the gasifier the gasifier loop 100 can be operated at pressures between about 100 1000 psia depending on the process requirement of units utilizing resultant syngas downstream inside the shell of the gasifier loop 100 there can be two layers of refractory lining an inner layer in contact with the circulating bed of solids can include a layer of erosion resistant refractory to protect the soft insulation refractory and vessel wall the outer insulating layer can be in contact with the shell of the gasifier loop 100 on one side and erosion resistant refractory on the other side the insulation refractory protects the shell from overheating one embodiment of the transport gasifier loop 100 can include a gas distributor near the bottom of the gasifier a lower mixing zone an upper mixing zone a riser an.