Device for heating using residual heat of sulfuric acid production

A technology for low-temperature waste heat and sulfuric acid production, which is applied in hot water central heating systems, household heating, applications, etc., to achieve the effects of easy transformation, energy and cost saving, and easy maintenance

Inactive Publication Date: 2010-06-09
山东建龙新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difficulty of recovery, most sulfuric acid manufacturers do not recover low-temperature waste heat. Generally, the generated acid with low-temperature waste heat flows through the acid cooler to exchange heat with circulating cold water to cool down. This will not only prevent the low-temperature waste heat from being obtained use, and in order to reduce the temperature of the acid, a large amount of cold water needs to be used, which not only wastes energy, but also wastes water source

Method used

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  • Device for heating using residual heat of sulfuric acid production
  • Device for heating using residual heat of sulfuric acid production
  • Device for heating using residual heat of sulfuric acid production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Such as figure 1 As shown: the acid cooler is an anode-protected shell-and-tube acid cooler 5, and the tube side of the anode-protected shell-and-tube acid cooler 5 is connected to the circulating water inlet pipe 9 and the circulating water outlet pipe 1, and the anode-protected shell-and-tube acid cooler The shell side of the device 5 is connected with the acid inlet pipe and the acid outlet pipe. The circulating water inlet pipe 9 and the circulating water outlet pipe 1 are respectively provided with a valve 8 and a valve 2. The tube-side outlet of the protective shell-and-tube acid cooler 5 is connected, the outlet of the warm water tower 15 is connected to the tube-side inlet of the anode protection shell-and-tube acid cooler 5 through the heating water warm water pipe 6, and the heating water and hot water pipe 4 is provided with a valve 3 , the heating water warm water pipe 6 is provided with a valve 7, a hot water pump 11 is arranged on the hot water pipe betwe...

Embodiment 2

[0025] Such as figure 2 As shown: the heating circulating water warming device is provided on the hot water tower 10, the heating circulating water warming device is a steam boiler 12, a connecting pipe 14 is provided between the hot water tower 10 and the warm water tower 15, and the connecting pipe 14 is provided with Valve 13, other same figure 1 .

[0026] In the seasons of spring, summer and autumn when heating is not needed, this embodiment is the same as embodiment 1.

[0027] In winter when heating is required, this embodiment is the same as Embodiment 1 during normal heating.

[0028] In the winter when heating is required, when the sulfuric acid production equipment temporarily stops, in order not to affect the heating, the warm water pump 18 can be shut down, and the valve 13 can be opened at the same time, so that the hot water tower 10 is connected with the warm water tower 15, and the steam boiler 12 is sent to the hot water tower. A small amount of high-tem...

Embodiment 3

[0031] Such as image 3 As shown: the heating water temperature pipe 6 is provided with a heating circulating water cooling device, the heating circulating water cooling device is a shell-and-tube heat exchanger 21, a valve 19 is added on the heating water temperature pipe 6, and the tube of the shell-and-tube heat exchanger 21 The process is connected to the heating water temperature water pipe 6 through the water inlet pipe and the water outlet pipe. The water inlet pipe and the water outlet pipe of the tube side of the shell and tube heat exchanger 21 are respectively provided with a valve 20 and a valve 22. Others are the same figure 2 .

[0032] In the seasons of spring, summer and autumn that do not require heating, this embodiment is the same as embodiment 1.

[0033] In the winter when heating is required, during normal heating or when the sulfuric acid production equipment temporarily stops or when the heat provided by the low-temperature waste heat to the heating c...

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Abstract

The invention relates to a heating supply method by using vitriol to generate low-temperature residual heat and the device, belonging to the waste heat utilization technical field. The method is characterized in that acid with 98% concentration generated during fabricating vitriol by double-absorption process is used as heat source and cycling water of heating supply in acid cooler heating supplysystem is used to supply heat. The device comprises acid cooler. The acid cooler is divided into tube side and shell side. The shell side is connected with acid inlet pipe and acid outlet pipe. The tube side is connected with water inlet tube and water outlet tube of cycling water. Valves are set on water inlet tube and water outlet tube of cycling water. The device is characterized in that the tube side of acid cooler is connected with heating supply device by tubes. The invention not only recovers low-temperature residual heat in vitriol production but also saves energy and cost in heating supply. It is provided with energy saving, decreased consumption, convenient maintenance and conveniently modifying prior technology.

Description

technical field [0001] The invention belongs to the technical field of waste heat utilization, and in particular relates to a device for producing low-temperature waste heat by using sulfuric acid for heating. Background technique [0002] In China, sulfuric acid production includes sulfuric acid production, pyrite acid production, and smelting flue gas production of acid. Most of the above-mentioned acid production methods adopt relatively advanced two-turn and two-absorption acid production processes. During the acid production process, chemical reactions The heat generated is considerable, and fully recovering and utilizing this heat is an important task in the sulfuric acid manufacturing industry. In the two-rotation and two-suction acid production process, the waste heat at 800-1000°C during the roasting process is usually called high-temperature waste heat, about Accounting for 60% of the total waste heat, the waste heat around 500°C in the conversion process is calle...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D3/00F24D3/02
Inventor 张龙银
Owner 山东建龙新材料科技有限公司
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