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Flue gas hardness reducing apparatus and use method thereof

A flue gas and gas technology, applied in chemical instruments and methods, complex/solubilizer treatment, special treatment targets, etc., can solve the problems of high operating costs, large investment costs, and not being popularized and used

Active Publication Date: 2015-01-21
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The present invention provides a flue gas dehardening device and its use method, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of dehardening of existing water bodies. In the process, there are problems of high operating costs and high requirements for influent water quality, and in the process of capturing CO 2 in flue gas, there are large investment costs, high operating costs, and no large-scale promotional use of

Method used

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  • Flue gas hardness reducing apparatus and use method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment one: as attached figure 1 As shown, the flue gas dehardening device includes a mixer 1, a fan 2 and a reactor 3. A shower is installed on the inside of the top of the reactor 3, and an air inlet connected to the reactor 3 is provided at the lower left end of the reactor 3. Chamber 4, the upper left end of the reactor 3 is provided with a water inlet chamber 5 communicated with the reactor 3, the upper right end of the reactor 3 is provided with an outlet chamber 6 communicated with the reactor 3, and the lower right end of the reactor 3 is provided with a The water outlet chamber 7 connected with the device 3, the air inlet of the fan 2 is equipped with a flue gas delivery pipe 8, the air outlet of the fan 2 is connected with the first inlet of the mixer 1 through the inlet pipe 9, and the second inlet of the mixer 1 is connected There is a dosing pipeline 10, the outlet of the mixer 1 communicates with the air inlet chamber 4, the water inlet pipeline 11 ...

Embodiment 2

[0047] Embodiment two: the using method of above-mentioned flue gas dehardening device, carry out according to the following steps:

[0048] In the first step, the sodium hydroxide solution or the ammonia solution is added to the inside of the mixer 1 through the dosing pipeline 10, and the flue gas is transported to the inside of the mixer 1 through the fan 2 and gasified with the sodium hydroxide solution or the ammonia solution. Liquid mixing, the working pressure inside the mixer 1 is in the range of 0.2MPa to 0.5MPa, and the pH value of the liquid after gas-liquid mixing is in the range of 9 to 10;

[0049] In the second step, the gas after the gas-liquid mixture enters the interior of the reactor 3 through the air inlet chamber 4 at the lower left end of the reactor 3, and the liquid after the gas-liquid mixture enters the inside of the reactor 3 through the air inlet chamber 4 at the lower left end of the reactor 3, and waits to be softened The water body enters t...

Embodiment 3

[0050] Embodiment three: the use method of above-mentioned flue gas dehardening device, carry out according to the following steps:

[0051] In the first step, the sodium hydroxide solution or the ammonia solution is added to the inside of the mixer 1 through the dosing pipeline 10, and the flue gas is transported to the inside of the mixer 1 through the fan 2 and gasified with the sodium hydroxide solution or the ammonia solution. Liquid mixing, the working pressure inside the mixer 1 is in the range of 0.2MPa to 0.5MPa, and the pH value of the liquid after gas-liquid mixing is in the range of 9 to 10;

[0052] In the second step, the gas after the gas-liquid mixture enters the interior of the reactor 3 through the air inlet chamber 4 at the lower left end of the reactor 3, and the liquid after the gas-liquid mixture enters the inside of the reactor 3 through the air inlet chamber 4 at the lower left end of the reactor 3, and waits to be softened The water body enters t...

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Abstract

The invention relates to the technical field of water softening apparatus, and relates to a flue gas hardness reducing apparatus and a use method thereof. The flue gas hardness reducing apparatus comprises a mixer, a fan and a reactor, the left lower end of the reactor is provided with a gas inlet chamber, the left upper end of the reactor is provided with a water inlet chamber, the right upper end of the reactor is provided with a gas outlet chamber, the right lower end of the reactor is provided with a water outlet chamber connected with the reactor, the gas inlet of the fan is provided with a flue gas conveying tube, the gas outlet of the fan is connected with the first inlet of the mixer through an air inlet tube, the second inlet of the mixer is connected with a medicine adding pipeline, and the outlet of the mixer is connected with the gas inlet chamber. The apparatus has a reasonable and compact structure, is convenient to use, and realizes no toxic side products, no large water property change, small generated mud residue quantity and small labor intensity of operators by using CO2 as a water softening agent; and CO2 in the flue gas is used as a gas source to realize the recycling of the flue gas and reduce the emission of CO2.

Description

technical field [0001] The invention relates to the technical field of water body softening devices, and relates to a flue gas dehardening device and a use method thereof. Background technique [0002] On the one hand, hardness, as an important water quality index, has received widespread attention in drinking water and industrial water. Generally speaking, calcium ions and magnesium ions are the main causes of hardness. Excessive hardness will cause many problems in the process of municipal water and industrial water, and even nephritis in the human body is considered to be related to excessive hardness of water. Calcium ions and magnesium ions are easy to form precipitates in pipelines and boilers, which cause many problems in domestic water, industrial water and water treatment processes. For example, membrane desalination process (reverse osmosis) has been restricted in use due to scaling and clogging. limit. The current water hardness removal technology mainly include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/08
CPCC02F5/08C02F2303/22
Inventor 黄强杨萍萍赵波郑帅杨永军王爱军穆永亮卜奎勇周京都
Owner BC P INC CHINA NAT PETROLEUM CORP
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