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Nitroglycerin-containing waste water neutralizing treatment process

A technology of nitroglycerin and treatment process, applied in the field of explosives, can solve the problems of long treatment time, large equipment investment and treatment space, etc., and achieves the effects of good mixing effect, flexible use mode and reduced treatment space

Inactive Publication Date: 2012-12-19
XIAN MODERN CHEM RES INST
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Problems solved by technology

Therefore, the treatment time of each batch of wastewater in the neutralization tank is longer, and the neutralization tank needs to be added according to the total amount of wastewater treatment, which leads to the equipment investment and cost of the neutralization treatment process when the amount of wastewater is large. Larger processing space required

Method used

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  • Nitroglycerin-containing waste water neutralizing treatment process
  • Nitroglycerin-containing waste water neutralizing treatment process

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Embodiment

[0027] Implementation example: The applicant uses the nitroglycerin-containing wastewater neutralization treatment process of the above-mentioned static mixer external type to continuously process nitroglycerin-containing wastewater. The height of the wastewater outlet of the bender 4 from the static mixer 6 is 500mm, and the wastewater discharge standard is pH The value is equal to 8.5. The nitroglycerin-containing wastewater with a volume flow rate of 4m3 / h first flows into the bender 4, and due to the effect of the baffle in the bender 4, the flow rate of the nitroglycerin-containing wastewater is relatively slow, so that most of the free state nitrification in the wastewater Glycerin settles to the bottom of the bender. Afterwards, the waste water containing nitroglycerin flows into the mitered pipe 5 through a height difference of 500 mm, and flows into the static mixer 6 together with the lye injected by the pump 3 through the mitered pipe 5 . Under the action of the mi...

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Abstract

The invention discloses a nitroglycerin-containing waste water neutralizing treatment process. Used equipment comprises a lye tank, a lye-charging regulating valve, a pump, a curved-path device, a miter tube, a static mixer, a neutralization tank and an on-line pH (potential of hydrogen) detector. The process includes the procedures that lye in the lye tank enters the miter tube by passing through the pump and the lye-charging regulating valve, and nitroglycerin-containing waste water flows into the curved-path device by the aid of position differences; the nitroglycerin-containing waste water passing through the curved-path device and the lye flow into the static mixer together via the miter tube, so that the acidic nitroglycerin-containing waste water is sufficiently mixed and reacted with the lye; and the reacted waste water flows into the neutralization tank for further reaction in the same, and the waste water meeting the requirements is discharged from the upper-middle portion of the neutralization tank. The static mixer can be arranged inside or outside the neutralization tank to be applicable to batch treatment and continuous treatment of the nitroglycerin-containing waste water respectively. The process has the advantages of low equipment investment cost, small required space, short treatment time, flexible usage mode, capability of sufficiently recovering nitroglycerin and the like.

Description

technical field [0001] The invention belongs to the technical field of explosives, and in particular relates to a process for neutralizing wastewater containing nitroglycerin. Background technique [0002] At present, nitroglycerin is produced by esterification of glycerin with nitric acid mixed acid in industry. The main components of wastewater generated during the production process are water, nitric acid, sulfuric acid, nitroglycerin, etc. Nitroglycerin may deposit and accumulate during the wastewater discharge process, causing accidents. Therefore, the nitroglycerin in the wastewater must be separated, recovered, and treated before being discharged. This will not only improve the safety of the wastewater treatment process but also effectively increase the yield of nitroglycerin. Rate. Because the waste water is acidic, it must be neutralized with lye before it can be discharged. [0003] Traditional nitroglycerin wastewater neutralization treatment process uses two o...

Claims

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Application Information

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IPC IPC(8): C02F1/66
Inventor 金建平杨毅邹高兴王晓东卢栓仓罗志龙王勇商砚冰陈基景青
Owner XIAN MODERN CHEM RES INST
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