High-temperature steam heat release system of digester for generating calcium hydroxide based on calcium oxide
By installing a spray water device and a condensate tank in the calcium oxide to calcium hydroxide digester, the high-temperature steam heat energy generated during the quicklime to hydrate process is efficiently stored and utilized, solving the problem of insufficient utilization of high-temperature steam heat energy in the existing technology and realizing efficient heat energy storage and release.
Patent Information
- Application Number
- CN202520051359.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-01-09
AI Technical Summary
Existing technologies have failed to effectively utilize the high-temperature steam heat energy generated during the process of quicklime turning into slaked lime. Research from an environmental perspective has failed to solve the environmental pollution problem and has neglected the scientific utilization of high-temperature steam heat energy.
The high-temperature steam exothermic system of the oxidized lime digester set in the patent solves the technical problem of how to effectively store the high-temperature steam generated as an additional product during the conversion of quicklime into hydrated lime.
This invention achieves efficient storage and utilization of high-temperature steam heat energy generated from quicklime, enabling low-cost applications with readily available raw materials. It utilizes a high-temperature steam exothermic system for the conversion of calcium oxide into calcium hydroxide, as described in the patent. This system features high energy density, rapid heat release, stability, safety, non-toxicity, and low cost. It effectively solves the technical problem of how to efficiently store the high-temperature steam generated as a byproduct during the conversion of quicklime into hydrated lime.
Smart Images
Figure CN223855601U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a lime digester that generates calcium hydroxide from calcium oxide, in particular to a high-temperature steam heat release system based on a lime digester that generates calcium hydroxide from calcium oxide. BACKGROUND
[0002] Thermochemical energy storage is a reversible chemical reaction that converts thermal energy into chemical energy and stores it in the reaction medium. When needed, the stored chemical energy is released in the form of reaction heat through reverse thermochemical reaction or combustion. Because the thermochemical energy storage process is through the breaking and recombination of chemical bonds, it realizes the conversion of energy from "thermal energy-chemical energy-thermal energy". Therefore, thermochemical energy storage has the advantages of large energy storage capacity, high use temperature, small heat loss during energy storage, and long-distance transportation. Currently, the research of thermochemical energy storage system is still in the laboratory stage, and the conversion of calcium hydroxide and calcium oxide belongs to the thermochemical energy storage system. Currently, the building materials industry generally uses calcium oxide (quicklime) to generate calcium hydroxide (slaked lime) by mixing with water. This industry generally uses quicklime digester equipment to complete the above process. The focus of the entire process is on the pursuit of slaked lime products. For the high-temperature steam generated during the process, only from the environmental protection point of view, the research direction is to not produce environmental pollution, and no attention is paid to the generation and scientific use of high-temperature steam heat. In the process of generating slaked lime from quicklime, how to effectively and utilize the heat of the additional product of high-temperature steam has become a new research topic. SUMMARY
[0003] The utility model provides a kind of high-temperature steam heat release system based on calcium oxide generation calcium hydroxide digester, solve in the process of quicklime conversion into slaked lime, how to effectively and store the technical problem of additional product high-temperature steam generated.
[0004] The utility model is through following technical scheme solves above technical problem:
[0005] A kind of high-temperature steam heat release system based on calcium oxide generation calcium hydroxide digester, including lime digester and condensate tank, calcium oxide feed port and high-temperature steam output port are respectively arranged on the top end surface of lime digester, calcium hydroxide discharge port is arranged on the bottom end surface of lime digester, spraying water device is arranged in lime digester, and heat storage water is arranged in condensate tank;Steam hot air outlet pipe is connected on high-temperature steam output port, cyclone separation powder collector is connected at the other end of steam hot air outlet pipe, steam hot air return pipe and steam exhaust pipe are respectively connected at the output end of cyclone separation powder collector, the other end of steam hot air return pipe is connected with induced draft fan, the output end of induced draft fan is communicated with lime digester, and the other end of steam exhaust pipe is arranged in heat storage water in condensate tank.
[0006] The belt conveyor is provided with a calcium oxide feeding port, and the output end of the belt conveyor is connected with the upper end of the calcium oxide feeding port; a calcium oxide hopper is arranged on the input end of the belt conveyor, and the discharge port of the elevator is arranged above the calcium oxide hopper; and a calcium hydroxide receiving hopper is arranged below the calcium hydroxide discharge port.
[0007] The present application has the advantages of low cost, wide raw material sources and easy acquisition, and is one of the preferred thermal chemical energy storage systems due to high energy storage density, fast heat storage and release speed, stability, safety, non-toxicity, low price and easy disposal. BRIEF DESCRIPTION OF DRAWINGS
[0008] Figure 1 is a structural schematic view of the present application. DETAILED DESCRIPTION
[0009] The present application will be described in detail below with reference to the drawings:
[0010] A high-temperature steam heat release system of a calcium oxide-based calcium hydroxide digester, comprising a lime digester 201 and a condensate tank 212, wherein a calcium oxide feeding port 202 and a high-temperature steam output port 206 are arranged on the top end surface of the lime digester 201, a calcium hydroxide discharge port 204 is arranged on the bottom end surface of the lime digester 201, a water spraying device 203 is arranged in the lime digester 201, and a heat storage water 213 is arranged in the condensate tank 212; a steam hot air outlet pipe 207 is connected to the high-temperature steam output port 206, a cyclone separation powder collector 208 is connected to the other end of the steam hot air outlet pipe 207, a steam hot air return pipe 209 and a steam exhaust pipe 211 are respectively connected to the output end of the cyclone separation powder collector 208, an induced draft fan 210 is connected to the other end of the steam hot air return pipe 209, the output end of the induced draft fan 210 is communicated with the lime digester 201, the calcium oxide in the lime digester 201 is further reacted by the induced high-temperature steam to generate calcium hydroxide, and the other end of the steam exhaust pipe 211 is arranged in the heat storage water 213 in the condensate tank 212, so that the heat energy of the high-temperature steam obtained by the heat chemical reaction is stored in the heat storage water 213.
[0011] The belt conveyor is arranged on the calcium oxide feeding port 202, the output end of the belt conveyor is connected with the upper end of the calcium oxide feeding port 202, a calcium oxide hopper 214 is arranged on the input end of the belt conveyor, and the discharge port of an elevator 215 is arranged above the calcium oxide hopper 214; the elevator lifts and conveys the calcium oxide into the calcium oxide hopper 214, and the material on the discharge port of the calcium oxide hopper 214 is conveyed into the calcium oxide feeding port 202 through the belt conveyor; and a calcium hydroxide receiving hopper 205 is arranged below the calcium hydroxide discharge port 204, so as to collect the calcium hydroxide obtained after the chemical reaction.
Claims
1. A high-temperature steam heat release system for generating calcium hydroxide digesters based on calcium oxide, comprising a lime digester (201) and a condensed water tank (212), a calcium oxide feeding port (202) and a high-temperature steam output port (206) are respectively arranged on the top end surface of the lime digester (201), a calcium hydroxide discharging port (204) is arranged on the bottom end surface of the lime digester (201), a water spraying device (203) is arranged in the lime digester (201), and heat storage water (213) is arranged in the condensed water tank (212); characterized in that, Steam hot air outlet pipe (207) is connected on high temperature steam output port (206), cyclone dust collector (208) is connected on the other end of steam hot air outlet pipe (207), steam hot air return pipe (209) and steam exhaust pipe (211) are respectively connected on the output end of cyclone dust collector (208), the other end of steam hot air return pipe (209) is connected with induced draft fan (210), the output end of induced draft fan (210) is communicated with lime digester (201), the other end of steam exhaust pipe (211) is arranged in heat storage water (213) in condensate tank (212).
2. A high temperature steam heat releasing system for a lime hydrator based on calcium oxide to generate calcium hydroxide, according to claim 1, characterized in that, Belt conveyor is arranged on calcium oxide feeding port (202), the output end of belt conveyor is connected with the upper end of calcium oxide feeding port (202), calcium oxide hopper (214) is arranged on the input end of belt conveyor, the discharge port of elevator (215) is arranged above calcium oxide hopper (214); calcium hydroxide receiving hopper (205) is arranged below calcium hydroxide discharge port (204).