Method and equipment for recycling ammonia gas in production of ammonium paratungstate

A technology of ammonium paratungstate and ammonia gas, which is applied in the field of tungsten smelting and processing, can solve the problem of low reuse rate of liquid ammonia, and achieve the effect of complete recovery and simple treatment

Inactive Publication Date: 2020-09-18
江西智府科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of the low reutilization rate of liquid ammonia in the prior art, which leads to a large number of storage points, and proposes a method for recycling ammonia in the production of ammonium paratungstate

Method used

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  • Method and equipment for recycling ammonia gas in production of ammonium paratungstate
  • Method and equipment for recycling ammonia gas in production of ammonium paratungstate
  • Method and equipment for recycling ammonia gas in production of ammonium paratungstate

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Experimental program
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Embodiment 1

[0031] refer to Figure 1-5 , a method for recycling ammonia in the production of ammonium paratungstate, comprising the following steps;

[0032] Step 1: Connect the crystallization pot in the process of producing ammonium paratungstate and the outlet of the rotary furnace in the process of producing yellow and blue tungsten in parallel, and use the induced draft fan to send the ammonia generated in the two devices into the rectification tower for preliminary gas-liquid separation;

[0033] Step 2: Transfer the ammonia gas from preliminary gas-liquid separation in step 1 into a condensation tank for thorough gas-liquid separation to obtain ammonia gas, then transfer 73-77% of the obtained ammonia gas to a spray adsorption tower, and use hydrochloric acid to Ammonia is sprayed and adsorbed to obtain ammonium chloride solution;

[0034] Step 3: Collect the ammonia gas sprayed in step 2 in a container, then pump the ammonium chloride solution in the container into a Venturi dev...

Embodiment 2

[0041] refer to Figure 1-7 , as another preferred embodiment of the present invention, the difference from Embodiment 1 is that the condensate storage tank 11 includes a box body 111, a first filter screen 112 and a second filter screen 113, and the first filter screen 112 and the second filter screen The net 113 is installed in parallel in the first filter net 112 and the second filter net 113; the first filter net 112 and the second filter net 113 remove impurities in the condensate to ensure rapid cooling.

[0042] The bottom of the box body 111 is fixedly installed with a liquid inlet pipe 12, and the liquid inlet pipe 12 is connected with the inlet end of the cooling coil 42; One end is fixedly installed with air cooler 132, and the outlet end of air cooler 132 is equipped with dust filter net 133, and one side of dust filter net 133 is fixedly installed with deflector 134, and the outlet end of deflector 134 is equipped with air guide pipe 135, guides The air duct 135 ...

Embodiment 3

[0044] refer to Figure 1-8 , as another preferred embodiment of the present invention, the difference from Embodiment 1 or Embodiment 2 is that a buffer assembly 7 is installed under the tank body 41, and the buffer assembly 7 includes a support seat 71, which is fixedly installed inside the housing 1 A plurality of springs 73 are fixedly mounted on the inner side of the support seat 71, and a buffer plate 72 is fixedly installed on the top of the spring 73, and the buffer plate 72 is in conflict with the bottom of the tank body 41. The function of the design of the buffer assembly 7 is that the buffer plate 72 can ensure that the tank body 41 will not shake greatly during transportation, so as to avoid safety accidents.

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Abstract

The invention relates to the technical field of tungsten smelting processing, in particular to a method for recycling ammonia gas in production of ammonium paratungstate. Ammonia gas is completely separated out mainly through two times of gas-liquid separation of different degrees, pure ammonia gas is obtained, and therefore follow-up ammonia gas treatment is simpler and more convenient, and recovery is more complete. Most of ammonia gas is conveyed into a spray adsorption tower, ammonia gas is sprayed and adsorbed through hydrochloric acid to obtain an ammonium chloride solution, the ammoniumchloride solution is collected in a container, then the ammonium chloride solution is used for dissolving the remaining ammonia gas through a Venturi device with a certain height, the remaining ammonia gas is also collected in the container, and therefore cyclic and continuous absorption of the ammonia gas is achieved, and it is guaranteed that the ammonia gas is completely absorbed.

Description

technical field [0001] The invention relates to the technical field of tungsten smelting and processing, in particular to a method and equipment for recycling ammonia gas in the production of ammonium paratungstate Background technique [0002] Tungsten is a metallic element with an atomic number of 74 and an atomic weight of 183.84. Elemental tungsten is steel-gray or silver-white, with high hardness and high melting point, and is not eroded by air at room temperature; it is mainly used to manufacture filaments, high-speed cutting alloy steel and superhard molds, and is also used in optical instruments and chemical instruments; currently it is mined in the world About 50% of the tungsten ore produced is used for the smelting of high-quality steel, about 35% is used for the production of hard steel, about 10% is used for making tungsten wire, and about 5% is used for other purposes. Tungsten can be used to manufacture firearms, nozzles of rocket propulsion, blades for cutti...

Claims

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Application Information

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IPC IPC(8): B01D5/00B01D53/14B01D53/58B01D53/79
CPCB01D5/0006B01D5/0072B01D5/009B01D53/1418B01D53/58B01D53/79B01D2251/502Y02A50/20
Inventor 孙伟权
Owner 江西智府科技有限公司
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