Design and Experimental Study of HTSG for Waste to Energy: Analysis of Pressure Difference

Jeachul Jang,Chongpyo Cho,Sunhee Oh,Seong-Ryong Park

doi:10.3390/en11071815

Abstract

The purpose of the present study is to analyze pressure difference changes inside a high-temperature steam generator (HTSG), which produces steam using the heat generated by waste incineration and decreases the pressure of the produced steam while increasing its temperature. The high-temperature, low-pressure steam produced by a HTSG is used for hydrogen production. Therefore, the steam temperature must be at least 700 °C, and the pressure must be lower than 300 kPa; hence, a device is needed to increase the steam temperature in the boiler and decrease the steam pressure. The physical behavior of the device was modeled and experimentally validated. The modeling and experimental results demonstrated good agreement when the steam was not preheated; however, an additional pressure drop required consideration of the opposite case.

Highlights

Waste to energy (WtE) has the advantages of reducing waste and transforming the energy obtained during incineration to a new form of useful energy [1]
We examined the use of an high-temperature steam generator (HTSG) to increase the steam temperature and reduce the
We examined the use of an HTSG to increase the steam temperature and reduce pressure of the high-temperature steam that is obtained using waste incineration heat for hydrogen the pressure of the high‐temperature steam that is obtained using waste incineration heat for production

Summary

Introduction

Waste to energy (WtE) has the advantages of reducing waste and transforming the energy obtained during incineration to a new form of useful energy [1]. In cases when steam is generated and used directly near demanding locations, the steam temperature typically ranges between 125 and 180 ◦ C [4]. This temperature range is obtained without a superheater due to the requirements and economic feasibility. WtE thermochemical technology typically includes incineration, thermal gasification, and pyrolysis methods. Waste is burned at temperatures above 1000 ◦ C

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