CN103406090A - Preparation method for dry adsorbent used for absorbing ammonia gas - Google Patents
Preparation method for dry adsorbent used for absorbing ammonia gas Download PDFInfo
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- CN103406090A CN103406090A CN201310340780XA CN201310340780A CN103406090A CN 103406090 A CN103406090 A CN 103406090A CN 201310340780X A CN201310340780X A CN 201310340780XA CN 201310340780 A CN201310340780 A CN 201310340780A CN 103406090 A CN103406090 A CN 103406090A
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Abstract
The invention provides a preparation method for dry adsorbent used for absorbing ammonia gas, which is characterized by comprising the following steps: taking a certain amount of porous substrate, drying the porous substrate, and cooling the porous substrate to normal temperature for later use; preparing an alkaline-earth metal halide solution; preparing a porous element from the porous substrate and the alkaline-earth metal halide solution; solidifying the porous element. The preparation method for the dry adsorbent used for absorbing ammonia gas has the following benefits: 1, the adsorbent adopts the principle of chemisorption, so that the extremely high treatment efficiency is ensured; 2, the adsorption capacity of the adsorbent to ammonia gas is great, with the volume ratio as high as 1 to 320; 3, the dry adsorbent is easy to desorb, and the desorption temperature is normally lower than 120 DEG C; 4, compared with a condensation method, the dry adsorbent ammonia gas absorption method is lower in energy consumption and cost, and has energy-saving and emission reduction effects.
Description
Technical field
The present invention relates to a kind of preparation method of the agent of the dry adsorption for absorbing ammonia.
Background technology
Ammonia relative molecular mass 17.031, fusing point-77.74 ℃, boiling point is-33.43 ℃ under an atmospheric pressure, under normal temperature, be gas, the smell of colourless irritant stench is soluble in water.Common ammonia mainly is used as refrigerant and produces ammonium salt and nitrogenous fertilizer.High-purity ammonia is mainly used in general semicon industry at present, for the production of GaN solar cell.
Synthetic ammonia is one of industry that energy consumption is higher, and the energy used is the raw material of producing ammonia, is again the Ministry Of Fuel And Power power that must consume in production process.It is the important component part of synthetic ammonia installation that ammonia separates, and directly affects the main technique indexs such as hydrazine yield, unstripped gas consumption, synthesic gas compressor and circulator power consumption, is one of key link of synthetic ammonia installation Increasing Production and Energy Saving.
The condensation method separation of ammonia relies on the equipment such as water cooler, cool exchanger and ammonia cooler to realize that ammonia separates.Wherein to be separated in the energy consumed in ammonia cooler the highest for ammonia, mainly relies on the liquefied ammonia evaporation endothermic to make the gas ammonia condensation separation in circulating air, and the acquisition of liquefied ammonia must could realize by ammonia compression refrigeration, and this is a large amount of energy of needs consumption just.The condensation method separation of ammonia, except energy consumption is higher, also limits the reduction of ammonia synthesis pressure.Reducing ammonia synthesis pressure is the main path that reduces the system compresses power consumption.But along with the reduction of synthesis pressure, condensation method divides the energy consumption of ammonia further to increase, this is also to limit at present one of further key factor reduced of synthesis pressure.
In addition, the condensation method separation of ammonia also has following two deficiencies.At first, ammonia separates usually incomplete, and the gas of Returning reactor may contain more ammonia like this, can reduce ammonia synthesis efficiency.Secondly, in whole process, use a large amount of cold condensed gas mixture separation of ammonia to limit the further reduction of ammonia production cost.
Therefore, changing the ammonia separation method, adopt the efficient minute ammonia method that can adapt to low synthesis pressure, is an important channel that reduces ton ammonia energy consumption.
On the other hand, be applied in the high-purity ammon of general semicon industry expensive.In GaN process equipment tail gas, there is a large amount of ammonias, if directly will after its discharge, process with acid absorption or burning, a large amount of wastes of ammonia have not only been caused, also further brought new environmental issue, if can the ammonia in tail gas efficiently be separated, not only can reduce production costs, form recycling ammonia, can also greatly reduce discharge and the processing of follow-up tail gas, realize energy-saving and emission-reduction.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of preparation method of the agent of the dry adsorption for absorbing ammonia, the adsorbent prepared by the method have treatment effeciency high, to the ammonia adsorbance greatly, selectively good, easy desorb, can not cause the characteristics of environmental pollution.
In order to solve the problems of the technologies described above, technical scheme of the present invention has been to provide a kind of agent of dry adsorption for absorbing ammonia preparation method, it is characterized in that, step is:
Step 1, get a certain amount of porous matrix and dry, be cooled to after normal temperature standby;
Step 2, alkaline-earth halide solution preparation: alkaline-earth halide is mixed with water with the ratio near saturated solution concentration as far as possible, be mixed with alkaline-earth halide solution;
The alkaline-earth halide solution that step 3, the porous matrix that step 1 is made and step 2 make forms a multihole device;
The multihole device that step 4, curing schedule 3 obtain, can make the dry adsorption agent for absorbing ammonia.
Preferably, porous matrix described in step 1 is at least a in activated alumina, zeolite, silica gel, kaolin or activated bauxite.
Preferably, alkaline-earth halide described in step 2 is calcium chloride, magnesium chloride, strontium chloride, magnesium bromide or calcium bromide etc.
Preferably, the formation method of multihole device described in step 3 or be immersed in the solution of alkaline-earth halide for described porous matrix, or for the solution of described alkaline-earth halide is injected in to the surface of porous matrix with the method for splash.
Preferably, in described step 2, by alkaline-earth halide with after the air release material mixes, with the ratio near saturated solution concentration as far as possible, mix with water, be mixed with alkaline-earth halide, by the aperture of the described porous matrix of air release Material reinforcement, make the solution of described alkaline-earth halide immerse better in the molecule of described porous matrix, wherein, the mass ratio of alkaline-earth halide and air release material is 3: 1-5: 1.
Preferably, described air release material is sodium acid carbonate or sodium carbonate.
Preferably, in step 4 method of curing porous element for or multihole device be placed in baking oven or Muffle furnace dry, or allow the multihole device natural air drying.
A kind of agent of dry adsorption for absorbing ammonia provided by the invention has following beneficial effect: 1, adsorbent adopts the principle of chemisorbed, has guaranteed high treatment effeciency; 2, adsorbent is large to the adsorption capacity of ammonia, reaches as high as volume ratio 1: 320; 3, the easy desorb of dry adsorption agent, desorption temperature are usually less than 120 degree; 4, the method for dry adsorption agent absorbing ammonia is compared with condensation method, has not only reduced energy consumption, and has reduced cost, has accomplished energy-saving and emission-reduction.
The specific embodiment
For the present invention is become apparent, hereby with preferred embodiment, be described in detail below.
Embodiment 1
Step 1: silochrom is placed in to baking oven, dries 2h under 170 ℃, the moisture of the inside and foreign gas are discharged;
Step 2:40% calcium chloride solution preparation: take the 432g anhydrous calcium chloride, be dissolved in the 648g pure water, stir, be made into calcium chloride solution;
Step 3: the silochrom of oven dry is put into drier and is cooled to room temperature, takes 80g silica gel, pours into respectively in 40% calcium chloride water by the ratio of 1: 10 (1g silica gel, 10ml calcium chloride solution), and dipping 24h, fully enter in the silica gel hole calcium chloride;
Step 4: the silica gel elimination calcium chloride solution after dipping, at 200 ℃ of lower constant temperature 2h, weigh.
By said method, make the dry adsorption agent, ammonia is carried out to adsorption experiment, as calculated, the above dry adsorption agent of 1 volume can absorb the ammonia of 295 volumes.
Embodiment 2
Step 1: the activated alumina of getting 20g is dried, and the specification of activated alumina is 3～5mm, activated alumina in baking oven 180 ℃ dry 3h, take out be cooled to after normal temperature standby;
Step 2:30% magnesium chloride solution preparation: take the magnesium chloride of 300g, be dissolved in the water of 700ml, mix, be mixed with 30% magnesium chloride solution;
Step 3: sample dipping: the magnesium chloride solution that step 2 is made is ejected in the mode of splash the activated alumina sample surfaces that step 1 makes;
Step 4: the sample that step 3 is completed takes out, and allows its natural air drying 3 days.
By said method, make the dry adsorption agent, ammonia is carried out to adsorption experiment, as calculated, the above dry adsorption agent of 1 volume can absorb the ammonia of 220 volumes.
Embodiment 3
Step 1: the activated alumina of getting 30g is dried, and the specification of activated alumina is 3～5mm, activated alumina in baking oven 150 ℃ dry 3h, take out be cooled to after normal temperature standby;
Step 2:40% calcium chloride and sodium bicarbonate solution preparation: take the calcium chloride of 400g, take simultaneously the sodium acid carbonate of 100g, be dissolved in the water of 500ml, mix, be mixed with the mixed solution of calcium chloride and sodium acid carbonate;
Step 3: sample dipping: by the activated alumina sample that step 1 makes, put into the mixed solution that step 2 makes and add heat soaking, heating-up temperature maintains 80 degree, soaks 6h;
Step 4: the sample that immersion is completed takes out, and under the condition of 120 ℃, toasts 2h in baking oven.
By said method, make the dry adsorption agent, ammonia is carried out to adsorption experiment, as calculated, the above dry adsorption agent of 1 volume can absorb the ammonia of 315 volumes.
Claims (7)
1. the agent of the dry adsorption for an absorbing ammonia preparation method, is characterized in that, step is:
Step 1, get a certain amount of porous matrix and dry, be cooled to after normal temperature standby;
Step 2, alkaline-earth halide solution preparation: alkaline-earth halide is mixed with water with the ratio near saturated solution concentration as far as possible, be mixed with alkaline-earth halide solution;
The alkaline-earth halide solution that step 3, the porous matrix that step 1 is made and step 2 make forms a multihole device;
The multihole device that step 4, curing schedule 3 obtain, can make the dry adsorption agent for absorbing ammonia.
2. a kind of agent of dry adsorption for absorbing ammonia as claimed in claim 1 is characterized in that: porous matrix described in step 1 is at least a in activated alumina, zeolite, silica gel, kaolin or activated bauxite.
3. a kind of agent of dry adsorption for absorbing ammonia as claimed in claim 1, it is characterized in that: alkaline-earth halide described in step 2 is calcium chloride, magnesium chloride, strontium chloride, magnesium bromide or calcium bromide etc.
4. a kind of agent of dry adsorption for absorbing ammonia as claimed in claim 1, it is characterized in that: the formation method of multihole device described in step 3 or be immersed in the solution of alkaline-earth halide for described porous matrix, or for the solution of described alkaline-earth halide is injected in to the surface of porous matrix with the method for splash.
5. a kind of agent of dry adsorption for absorbing ammonia as claimed in claim 1, it is characterized in that: in described step 2, by alkaline-earth halide with after the air release material mixes, with the ratio near saturated solution concentration as far as possible, mix with water, be mixed with alkaline-earth halide, aperture by the described porous matrix of air release Material reinforcement, make the solution of described alkaline-earth halide immerse better in the molecule of described porous matrix, wherein, the mass ratio of alkaline-earth halide and air release material is 3: 1-5: 1.
6. a kind of agent of dry adsorption for absorbing ammonia as claimed in claim 5, it is characterized in that: described air release material is sodium acid carbonate or sodium carbonate.
7. a kind of agent of dry adsorption for absorbing ammonia as claimed in claim 1 is characterized in that: in step 4 method of curing porous element for or multihole device be placed in baking oven or Muffle furnace dry, or allow the multihole device natural air drying.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692663A (en) * | 2017-10-23 | 2019-04-30 | 中国石化扬子石油化工有限公司 | A kind of adsorbent and preparation method thereof utilized for Ammonia recovery |
| CN109908861A (en) * | 2019-02-26 | 2019-06-21 | 南京工业大学 | A kind of high-temperature and reversible adsorbent material of ammonia and preparation method thereof |
| CN112915969A (en) * | 2021-02-04 | 2021-06-08 | 上海交通大学 | Metal organic framework/halide composite ammonia adsorbent and preparation method thereof |
| CN113058377A (en) * | 2020-01-02 | 2021-07-02 | 吉林卓创新材料有限公司 | Carbon monoxide tail gas purification method |
| CN113231009A (en) * | 2021-05-27 | 2021-08-10 | 上海国瓷新材料技术有限公司 | Ammonia adsorbent and preparation method thereof |
| CN114950337A (en) * | 2022-04-06 | 2022-08-30 | 南京长三角绿色发展研究院有限公司 | Normal-temperature ammonia gas dry-type adsorption material and preparation method thereof |
| CN115814756A (en) * | 2022-12-08 | 2023-03-21 | 大连理工大学 | Alkaline earth metal halide ammonia gas composite adsorbent and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0827771A1 (en) * | 1996-09-06 | 1998-03-11 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for separating gaseous mixtures containing oxygen and nitrogen |
| CN102744036A (en) * | 2011-04-18 | 2012-10-24 | 香港科技大学 | Activated carbon/silica-gel/cacl2 composite adsorbent material for air-conditioning applications and a method of preparing the same |
-
2013
- 2013-08-06 CN CN201310340780XA patent/CN103406090A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0827771A1 (en) * | 1996-09-06 | 1998-03-11 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Process for separating gaseous mixtures containing oxygen and nitrogen |
| CN102744036A (en) * | 2011-04-18 | 2012-10-24 | 香港科技大学 | Activated carbon/silica-gel/cacl2 composite adsorbent material for air-conditioning applications and a method of preparing the same |
Non-Patent Citations (2)
| Title |
|---|
| 段琼: "氯化钙在粗孔硅胶上的单层分散及其氨吸附研究", 《四川化工》 * |
| 王令宝等: "余热制冷用氯化钙/硅胶复合吸附剂的制备及性能研究", 《热能动力工程》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692663A (en) * | 2017-10-23 | 2019-04-30 | 中国石化扬子石油化工有限公司 | A kind of adsorbent and preparation method thereof utilized for Ammonia recovery |
| CN109908861A (en) * | 2019-02-26 | 2019-06-21 | 南京工业大学 | A kind of high-temperature and reversible adsorbent material of ammonia and preparation method thereof |
| CN113058377A (en) * | 2020-01-02 | 2021-07-02 | 吉林卓创新材料有限公司 | Carbon monoxide tail gas purification method |
| CN112915969A (en) * | 2021-02-04 | 2021-06-08 | 上海交通大学 | Metal organic framework/halide composite ammonia adsorbent and preparation method thereof |
| CN112915969B (en) * | 2021-02-04 | 2022-07-22 | 上海交通大学 | Metal organic framework/halide composite ammonia adsorbent and preparation method thereof |
| CN113231009A (en) * | 2021-05-27 | 2021-08-10 | 上海国瓷新材料技术有限公司 | Ammonia adsorbent and preparation method thereof |
| CN114950337A (en) * | 2022-04-06 | 2022-08-30 | 南京长三角绿色发展研究院有限公司 | Normal-temperature ammonia gas dry-type adsorption material and preparation method thereof |
| CN114950337B (en) * | 2022-04-06 | 2023-08-18 | 南京长三角绿色发展研究院有限公司 | Normal-temperature ammonia gas dry-type adsorption material and preparation method thereof |
| CN115814756A (en) * | 2022-12-08 | 2023-03-21 | 大连理工大学 | Alkaline earth metal halide ammonia gas composite adsorbent and preparation method thereof |
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Application publication date: 20131127 |