SOLAR AND THERMAL ENERGY INTEGRATED SLUDGE DRYING SYSTEM

Abstract

This utility model presents a system that combines solar and thermal drying technologies for drying sewage sludge. In the solar drying unit, the sludge cake from the dewatering equipment is pre-dried before the "sticky phase," after which the sludge is transferred to the thermal drying unit. The flue gas or waste heat from the thermal drying unit is continuously transferred to the air circulation system of the solar unit. This integration results in energy savings, a shorter total drying time, and a smaller overall system footprint.

Description

1 TARIFF SOLAR AND THERMAL ENERGY INTEGRATED SLUDGE DRYING SYSTEM Technical Area This invention relates to the drying of waste sludge. Solar (solar-powered) drying and thermal 5 (Heat-based) drying systems are integrated to increase energy efficiency in the operation. It is a system where costs are reduced and environmental impacts are minimized. State of the Art In current sludge drying systems, solar and thermal methods are used separately. Solar systems offer advantages with their low energy consumption and maintenance costs, while the weather is 10. Depending on the temperature and duration of sun exposure, this results in long drying times. Also... They require large storage areas. Thermal drying systems, on the other hand, can be completed in a shorter time. Although it provides drying, it has high energy consumption and operating costs. Also, the sludge... During the drying process in the sticky phase, also known as the 'sticky phase', in the equipment Sticking and reduced efficiency occur. This increases energy consumption and the system's 15 This disrupts its continuity. Thermal sludge drying systems also produce high-temperature flue gas. It has an output or waste heat, which results in energy loss. Purpose of the Invention The aim of this invention is to integrate solar and thermal sludge drying systems, thereby benefiting both Combining the advantages of the system, “sticky phase” 20 in thermal drying systems The aim is to provide a solution to the problem and increase energy efficiency. The invention is the precursor of the solar system. It performs a drying function, and then the sludge reaches the desired dryness in a thermal drying unit. to dry it by feeding and the flue gas or waste of the thermal drying system This allows the heat to be directed to the air circulation system of the solar unit. By increasing the efficiency of the drying system, we aim to shorten the drying time and reduce energy consumption by 25%. It aims to reduce it. 2 Explanation of the Figures Figure 1: Flow of the system where solar and thermal sludge drying units are integrated. It shows the diagram. Explanation of References in Figures; • A: Solar sludge drying unit 5 • B: Thermal sludge drying unit • 1: Feeding the waste sludge into the solar drying unit. • 2: Feeding the pre-dried sludge into the thermal drying unit. • 3: Exit of the dried sludge from the system after it has reached the desired dryness. • 4: Recycling waste heat from the thermal drying system to the solar drying system. 10 It shows his diet. Brief Description of the Invention; This invention presents a system in which solar and thermal sludge drying systems work together in an integrated manner. Waste sludge is first pre-dried in a solar drying unit, then thermally dried. It is transferred to the drying unit. The flue gas or waste heat from the thermal drying unit is 15 The energy is fed back into the solar drying unit. This allows the system to recover energy and reduce costs. It operates with high efficiency even in sunny conditions. Detailed Description of the Invention This invention allows solar and thermal drying systems to operate sequentially and in an integrated manner. It is a sludge drying system. 20 Solar drying units can be in the form of greenhouse-type tunnels or similar structures, and can be made of glass, polycarbonate, or nylon. and isolated with a similar coating. The mud is removed by fan-assisted air circulation. It is allowed to dry. Thermal drying units include belt, rotary, paddle, and thin film types. It can be of the thin film, fast (flash) or fluid bed type and can use natural gas, biogas, 25 hot air, hot water, hot oil, solid fuel, hydrogen, steam, or any heat source It can work with. 3 The invention aims to process the sludge by first feeding it into a solar sludge drying system, where... It is dried by pre-drying. Then the pre-dried mud is thermally dried. It is transferred to the unit where the sludge is dried to the desired dryness. Thermal sludge The flue gas or waste heat from the drying system is transferred via a heat exchanger or directly The hot air is directed through a duct to the solar drying unit, and the solar drying system also has 5 Efficiency is increased. This improves the overall energy efficiency of the system, reduces carbon emissions, The drying time is shortened and the overall space occupied by the system is optimized. Pre-drying in a solar drying system involves pre-drying the sludge that is fed into the thermal drying process. It increases feeding and drying efficiency by reducing stickiness, and reduces the thermal energy load. It lowers. 10 How the invention can be applied to industry. This invention can be integrated into existing solar sludge drying systems, increasing the efficiency and capacity of the system and its seasonal dependence It helps reduce [the amount of sludge]. In addition, solar sludge drying systems will be used in newly established sludge drying systems. By offering the option of including both drying and thermal sludge drying, both systems have 15 It eliminates its individual disadvantages. 25

Claims

4 REQUESTS 1. A sludge where solar and thermal drying systems operate sequentially and in an integrated manner. It is a drying system whose characteristic is that the waste sludge is pre-dried using at least one solar panel. sludge drying unit (A), pre-5 coming out of the solar sludge drying unit (A) in question at least one positioned to allow the dried clay to dry to the desired dryness. thermal sludge drying unit (B) and thermal sludge drying unit (B) at least one heat source that directs the resulting flue gas or waste heat to the solar sludge drying unit (A) It includes a heat exchanger or a direct hot air duct. 15