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A mixture for flue gas desulfurization and its application
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A mixture, flue gas technology, used in the field of environmental protection and energy
Active Publication Date: 2018-04-06
SUZHOU YOUJUN ENVIRONMENTAL SCI & TECH
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Problems solved by technology
[0003] The technical problem to be solved: find an effective and economical mixture, which has the property of adsorbing sulfur dioxide in a wide temperature range, and the mixture can be reused without causing secondary pollution to the environment
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example 1
[0036] Example one: Sample 7 carries out the experiment of absorbing and removing sulfur dioxide:
[0037] step one)
[0038] The kinematic viscosity is 5-7mm in the 150ml reaction bottle 2 / s base oil (100.02 g) and put it into a water bath, raise the temperature of the water bath to 40°C, start to feed sulfur dioxide gas into the reaction bottle, and connect the tail gas absorption device, keep the water bath temperature of the sample at 40°C during the aeration process. After continuous aeration for 0.5 h, 2.21 g of absorbed sulfur dioxide was weighed, and the aeration was continued at this temperature until saturation (the sample reached constant weight after about 1 h), and then the absorbed sulfur dioxide was weighed to be 2.21 g. (See Table 2 for specific data).
[0039] Step 2) Desulfurization experiment of the sample that absorbs sulfur dioxide to saturation in step 1:
[0040] Put the sample obtained in Step 1 back into the water bath and raise the temperature slo...
example 2
[0041] Example two: Sample 6 carries out the experiment of absorbing and removing sulfur dioxide:
[0042] Step 1) Preparation of sample 6:
[0043] The kinematic viscosity is 5-7mm in the 150ml reaction bottle 2 / s base oil (98.01 g), add chlorinated paraffin (2.0 g) with a chlorine content of 45% under stirring, and the mixture is stirred at room temperature for 30 minutes after the addition, to achieve uniform mixing.
[0044] Step 2) Continuously pass sulfur dioxide gas at 40°C until saturated:
[0045] Put the sample prepared in step 1 into a water bath, raise the temperature of the water bath to 40°C, start to pass sulfur dioxide gas into the reaction bottle, and connect the tail gas absorption device, and keep the water bath temperature of the sample at 40°C during the aeration process. After continuous aeration for 0.5 h, the amount of absorbed sulfur dioxide was weighed to be 2.19 g. Continue to pass sulfur dioxide gas at this temperature until saturated (the sample...
example 3
[0049] Example three: Sample 6 carries out the experiment of repeatedly absorbing sulfur dioxide:
[0050] The sample obtained in Step 3 of Example 2 was cooled to room temperature, washed once with 12.5% ammonia water, and after no sulfur dioxide gas was detected, it was dried, and then Step 2 and Step 3 of Example 2 were repeated. Five experiments were carried out according to each step, and the specific data are listed in Table 4.
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Abstract
The invention discloses a mixture for flue gas desulphurization and a use thereof. Chlorinated paraffin and base oil are mixed according to a certain ratio to form a mixture, the mixture has good sulfur dioxide absorption effects, the absorbed sulfur dioxide is removed very easily, and the mixture without sulfur dioxide can be recycled to adsorb sulfur dioxide. Compared the traditional wet, dry and semi-dry flue gas desulphurization methods, the method utilizing the mixture realizes recycle of a desulfurizer, recovery of sulfur dioxide and no secondary pollution on the environment. The mixture is prepared from easily available raw materials and has a low cost. The mixture can provide solution thinking for a large global problem of flue gas desulphurization.
Description
technical field [0001] The invention belongs to the fields of environmental protection and energy, and relates to a novel mixture for flue gas desulfurization and its application. Background technique [0002] In recent years, my country's sulfur dioxidepollution has been quite serious, and currently flue gas desulfurization (FGD) is recognized as the most effective way to control sulfur dioxide emissions. People are studying both economical and efficient methods of controlling sulfur dioxide emissions. For this reason, they have successively developed: wet flue gas desulfurization technology represented by gypsum method and dilute sulfuric acid method; reflux circulating fluidized bed (RCFB) Dry flue gas desulfurization technology represented by flue gas desulfurization and semi-dry flue gas desulfurization technology represented by spray drying method. However, whether it is a wet method, a dry method or a semi-dry method, it is difficult to deal with by-products, seriou...
Claims
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Application Information
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