Arsenic removal device for flue gas of sintering machine and arsenic removal process
A technology for sintering flue gas and process water, applied in the field of flue gas purification, can solve the problems of affecting ammonium sulfate crystallization, endangering human health, complex raw material components, etc., so as to reduce human harm and improve crystal quality.
Pending Publication Date: 2018-02-09
洛阳市天誉环保工程有限公司
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Problems solved by technology
[0002] Due to the high temperature of the sintering machine and the complex composition of raw materials, the flue gas contains SO 2 In addition, a certain amount of heavy metals such as arsenic and its compounds are produced. In the ammonia desulfurization process, the presence of arsenic and its compounds first affects the crystallization of its by-product ammonium sulfate; in addition, if the ammonium sulfate containing arsenic is used as fertilizer for agricultural products As top dressing, arsenic will be enriched in the human body along the food chain, endangering human health
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[0011] The present invention is described in conjunction with accompanying drawing and specific embodiment:
[0012] Such as figure 1 As shown, an arsenic removal device for sintering flue gas, the arsenic removal device has an arsenic removal agent dissolving tank 1 with a built-in arsenic removing agent; the entrance of the arsenic removing agent dissolving tank 1 is connected with process water 11 ; The outlet of the arsenic-removing agent dissolving tank 1 communicates with the inlet of the oxidation circulation pump I7 through a pipeline; the oxidation circulation pump I7 is arranged at the lower part of one side of the oxidation tank 2; the outlet of the oxidation circulation pump I7 passes through The pipeline is connected with the injector I14 arranged on the upper end of the oxidation tank; the oxidation tank 2 is connected to the ammonium sulfite tank through the pipeline; The process water of the arsenic removal agent is sprayed into the oxidation tank, and the amm...
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The invention belongs to the technical field of flue gas purification for boilers and provides an arsenic removal device for flue gas of a sintering machine and an arsenic removal process. The arsenicremoval device for the flue gas of the sintering machine is provided with an arsenic removal agent dissolving tank containing an arsenic removal agent, wherein the inlet of the arsenic removal agentdissolving tank is communicated with process water; the outlet of the arsenic removal agent dissolving tank is communicated with the inlet of an oxidation circulating pump I arranged at the lower partof one side of an oxidation tank; the outlet of the oxidation circulating pump I is communicated with an ejector I arranged at the upper end of the oxidation tank; the oxidation tank is communicatedwith an ammonium sulfite tank through a pipe; an oxidation circulating pump II is further arranged at the lower part of the other side of the oxidation tank; the inlet of the oxidation circulating pump II is communicated with the oxidation tank, and the outlet of the oxidation circulating pump II is communicated with an ejector II; the outlet of the ejector II is formed below the liquid level of ammonium sulfite in the oxidation tank; a pipe between the oxidation circulating pump II and the ejector II is communicated with two sedimentation basins which are arranged in parallel connection; thesedimentation basins are communicated with a filter. The crystallization quality of byproduct ammonium sulfate is improved, and arsenic enrichment is reduced.
Description
technical field [0001] The invention belongs to the technical field of flue gas purification, and mainly relates to an arsenic removal device and arsenic removal process for flue gas of a sintering machine. Background technique [0002] Due to the high temperature of the sintering machine and the complex composition of raw materials, the flue gas contains SO 2 In addition, a certain amount of heavy metals such as arsenic and its compounds are produced. In the ammonia desulfurization process, the presence of arsenic and its compounds first affects the crystallization of its by-product ammonium sulfate; in addition, if the ammonium sulfate containing arsenic is used as fertilizer for agricultural products As topdressing, arsenic will be enriched in the human body along the food chain, endangering human health. Contents of the invention [0003] In order to solve the above technical problems, the object of the present invention is to propose a device for removing arsenic fro...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B01D53/78B01D53/64
CPCB01D53/64B01D53/78B01D2251/206B01D2251/608B01D2258/0283
Inventor 史选增贾犁锴宗原王建勋金明军
Owner 洛阳市天誉环保工程有限公司