A hot blast stove device and heating method applied to polyacrylamide drying

Abstract

The invention discloses a hot blast stove device used for drying polyacrylamide and a heat supply method. The hot blast stove device used for drying the polyacrylamide comprises a stove body, a cold air inlet, a hot air outlet, an ignition pipeline, a gas inlet pipeline and a control system; a combustor is arranged inside the stove body; the cold air inlet and the hot air outlet are formed in the side walls of the stove body, the cold air inlet is connected to an air blower, and the hot air outlet is connected to a polyacrylamide fluidized bed; the ignition pipeline and the gas inlet pipeline are connected to the side wall of the stove body; the control system comprises a flow control valve and a control cabinet, the flow control valve is connected to the gas inlet pipeline, and the flow control valve and the ignition pipeline are electrically connected to the control cabinet. According to the hot blast stove device and the heat supply method, gas and process air are directly mixed and combusted for generating heat source smoke, the heat source smoke and wet polyacrylamide make direct contact and carry out heat exchange in the fluidized bed for realizing drying, and the heat loss can be reduced by 30% compared with the heat loss of the technologies in the past; the structure is simple and reasonable, the efficiency is high, and the power consumption of the device is low.

Description

technical field [0001] The invention relates to a hot blast stove device, in particular to a hot blast stove device and a heating method for drying polyacrylamide. Background technique [0002] Polyacrylamide (PAM) is a water-soluble linear polymer polymerized by free radicals from acrylamide (AM) monomers. It is insoluble in most organic solvents and has good flocculation properties, which can reduce the liquid frictional resistance. PAM is widely used in petroleum, water treatment, papermaking and other fields. Among them, oil extraction is currently the field with the largest amount of PAM in China, and its consumption accounts for 56% of the total domestic demand. [0003] The water-soluble linear polymer PAM produced by the free radical polymerization process of AM monomer needs to be dried to remove water to obtain the finished product PAM. [0004] Most of the traditional hot air systems used in polyacrylamide (PAM) drying use heat transfer oil heat exchangers to p...

AI Technical Summary

Problems solved by technology

[0008] However, this technical solution only ensures that the hot air reaches a certain temperature, but cannot guarantee the hot air pressure. The device does not have a blower and cannot produce positive pressure combustion, and the hot air pressure cannot reach the pressure value that needs to be guaranteed. It is not suitable for drying polyacrylamide.

Images